I'm trying to convince myself as much as Sweetie. She's still frowning at me, biting her lip. Her hair's lopsided and straggly because Claudia hasn't got the knack of plaits, and she's got a rim of orange juice round her mouth. She still manages to look breathtakingly pretty.

'Come here,' I say, spitting on a tissue and scrubbing at her.

'Leave off!' she says, struggling, but when I've wiped off most of the orange she leans against me. 'Sunset, if Mum and Dad split up'

'I said, they're not going to.'

'Yes, but if what will happen to us? Will we live with Mum or will we live with Dad?'

'They'll both want you, Sweetie,' I say. 'Maybe they'll have to chop you in half.'

It's just a silly joke but her face crumples.

'Don't cry! I didn't mean it, I was just being silly. Oh, Sweetie, don't worry, they're not splitting up, I promise, but if they do, then maybe they'll take turns looking after us, or we'll stay with Mum during the week and Dad at weekends whatever.'

'But will we still live at home, with Margaret and John and Claudia and Ace?' asks Sweetie.

'Yes, of course,' I say, and she relaxes and runs off to join her little friends.

I trail round to the Juniors. The bell's already gone so I'm late, but I don't care. I'm thinking about Mum and Dad and home. I'm especially thinking about Wardrobe City.

John comes to collect Sweetie and me in the car at the end of school (Ace goes home with Claudia at lunch time). John's his usual silly self, telling us very bad jokes and making funny snorty pig noises, and Sweetie laughs and laughs, but as we draw up on the drive she quietens and starts sucking her thumb. But Dad's Jag is there. I blink hard yes, it really is there. He's back, so maybe everything's all right.

We go into the house and there are flowers in the hall, flowers all over the big living room, the lily smell so heady it makes me feel dizzy. Mum and Dad are sitting together on the big cream sofa, holding hands. Mum's wearing tight white trousers and a white lace top with a wide apricot belt and strappy gold high heels. Dad is all in black but he's wearing an apricot-coloured bandanna and three big gold rings. They are a matching pair, smiling smiling smiling, speaking softly in turn because they are being interviewed.

The journalist is sitting opposite them, taping every murmur with her little recorder, but she's scribbling in her notebook too, her long false nails getting in the way.

I hang back, especially when I see the photographer setting up his gear in the corner, but this is Sweetie's cue to be cute.

'Daddy! Mummy! I'm home from school,' she trills, and goes rushing up to them, giving them both a big hug, though she knows to be very careful. Woe betide her if she gets grubby fingers on Mum's white lace or knocks Dad's bandanna askew, showing his bald bits. Mum and Dad smile at her fondly and she wriggles between them, quaint in her red and white checked school dress, one sock up and one sock down, her red hair-ribbons trailing. Dad laughs and pulls her plaits; Mum shakes her head and ties her ribbons and pulls up her socks, but oh, so fondly.

'Oh, what a sweetheart!' says the journalist. 'She just obviously has to be Sweetie. So where's your other daughter?' She looks around the room and her cold blue eyes spot me skulking in the corner.

'Yes, come here, Sunset, darling,' says Mum, holding out her arms.

I have to do the hugging bit too, lumbering above them both, too big and awkward to cuddle in between them.

'Oh, let's have a family shot!' says the journalist. 'Haven't you got a little boy too?'

'Run and find Ace, Sunset, there's a little darling.'

So little darling goes off on an Ace-hunt. He's not in the playroom with Claudia or in the kitchen with Margaret. I look in the office and find Rose-May and Barkie. Rose-May is Dad's manager. She's got a soft flowery name and speaks in a soft whisper. She even looks soft and flowery: she's got fluffy blonde hair and she wears floaty tops and lots of perfume. However, she is so not soft and flowery herself. She's the only person I know who tells Dad what to do. She never shouts. When she's cross her voice gets even softer, but it's like she's a rose who's grown very sharp thorns. Dad doesn't argue with her, he does exactly what she says.

Barkie's not really called Barkie her name's plain Jane Smith but Dad always used to call her Barking Mad and now Barkie's her affectionate nickname. She doesn't mind. When she comes round she says on the intercom, 'Woof woof, it's only me.'

Barkie's known Dad since way back, when he first started his career. She was one of his number-one fans, following him from gig to gig. It was her idea to start up a fan club and she's been running it ever since. She's not exactly a fan now, because she's a middle-aged lady and she knows Dad too well, but she still melts whenever he looks at her. She's very nice but very, very plain, with goofy teeth even worse than mine, so Mum doesn't mind her staying close to Dad all these years. He treats her like his pet dog, patting her bony shoulders and ruffling her hair. He calls her his Number-One Girlfriend.

'Hello, Sunset,' says Rose-May. 'What's the matter?'

I'm not looking at her, I'm looking at Barkie.

Maybe she used to know Destiny's mother.

'I'm looking for Ace,' I say. 'That journalist wants to see him.'

'No, no, it was meant to be a Danny solo interview. I didn't even want Suzy in on the act,' Rose-May whispers, her little pink mouth puckering. 'It was meant to be about a new album, a new tour'

'Is Danny doing a new album and tour then?' Barkie asks eagerly.

Rose-May sighs. 'We're testing the water, Barkie. Calm down. Oh well, it looks as if it's going to be a family interview now. With photos.' She looks me up and down. 'Perhaps you'd better change, Sunset and maybe get Claudia to fix your hair,' she murmurs. 'I think she's upstairs with Ace. I'll go and chivy them along.'

She moves off purposefully, leaving a cloud of her flowery perfume in her wake. I wrinkle my nose and sneeze.

'Bless you,' Barkie says kindly, tapping away on her computer. 'Wouldn't it be exciting if Danny did do a new album, Sunset? Oh my, wouldn't the fans be overjoyed?'

'Barkie, you know you've been a fan for ages yourself, before Dad got together with Mum? Well, do you remember who Dad was going out with then?'

Barkie smiles at me, showing all her bad teeth. 'Your daddy's had lots of girlfriends, dear,' she says, with a little giggle. 'He used to be quite a lad in the old days.'

'Do you remember him seeing this very thin dark lady, Kate Williams?'

'Your dad didn't introduce his girlfriends to me, sweetheart.'

'No, but I think this lady might have been special to him,' I say. I don't think I should tell Barkie about her maybe having Dad's baby. It might upset her terribly, the way it did Mum. 'She certainly still thinks the world of Dad,' I add.

Barkie smiles and taps her screen, where she's updating the fan club membership details. 'So many ladies think the world of Danny,' she says.

Something clicks inside my head. 'Barkie, can you see if there's a Kate Williams on the fanbase?'

'Well, it's supposed to be confidential.'

'Oh, Barkie, please, I know her. Well, I know her daughter, and I need to get in touch. I don't know their email address. Please just have a peep for me. Quick, before Rose-May gets back.'

'All right then,' says Barkie, typing Kate Williams onto the screen.

'Oh no, there are heaps of them!' I groan, peering at the result.

'We've still got nearly a hundred thousand fans all over the world,' Barkie says proudly. 'Look, one of these Kate Williamses lives in Malta. And here's another in the States.'

'It won't be them. And it probably won't be this Kate she only just joined.' I sigh in frustration. 'But I suppose she could be any of the others.'

I think hard about Destiny's mum. I hear her desperate voice. She has a familiar broad accent. 'She talks sort of northern, like they do in Coronation Street,' I say.

'Then this will be her, most likely. This one lives in Wythenlathen,' says Barkie. 'That's part of Manchester, dear. There's no email address though.'

I seize Barkie's biro and scribble down the postal address on the inside of my wrist before she can stop me. Then I rush off to change. I put on the terrible leggings, but they wrinkle and twist so that it feels as if I've got my legs on backwards, and when I pull on the velvet smock I discover I've spilled strawberry ice cream all down the front. I pick jeans instead, with a stripy top and a little bolero thingy, trying hard to be creative. I hope I might look funky but judging by Mum's expression when I go back into the living room, I've failed miserably. None of us children match. Sweetie is still in her school dress, and Ace is in his Tigerman costume and his wellies.

The journalist claps her manicured hands and says we look such real children. What else could we be, puppets? Rose-May is frowning and she only allows a couple of quick photos before saying softly, 'I'm so sorry but the children must go and have their tea now, mustn't they, Suzy? You'll need to supervise them, won't you, darling but don't worry, I'll sit in with Danny for the rest of the interview and see that everyone's comfortable.'

So we are all cleverly dismissed. We sit at the kitchen table munching Margaret's pizza while Mum prowls restlessly up and down in her gold high heels. She's beautifully made up, but if you look very carefully you can make out dark circles under her eyes and they still look very red.

'I'm so glad you and Dad are friends again, Mum,' Sweetie says happily, swinging her legs.

'What do you mean, darling? Daddy and I are always friends,' Mum says sharply.

I flash a warning look at Sweetie. Can't she see they were only cosying up together for the journalist's benefit? Sweetie doesn't even see me looking, but Mum does.

'Don't wrinkle your nose like that, Sunset, it makes you look hideous. And what on earth are you wearing? That skimpy little bolero's much too small for you now. And you've got your school shoes with your jeans! What do they look like! Where are your boots? Honestly, I spend a fortune on your clothes and you dress like you've just been to a jumble sale.'

She goes on and on, wanting me to answer back so she can tell me off for cheek, but I don't say a word. I just sit there with one of my hands up my sleeve, stroking the inky words on my arm.

I've stroked a little too much. When I'm on my own in my bedroom at long last, when the stupid journalist and photographer are long gone, I examine my arm and see the writing's all smudged but I can just about make it out. I write it out in the back of my school jotter so I have it safely for ever.

Then I go to my wardrobe. Wardrobe City calls to me but this time I look at all my clothes crammed tightly on the left, and click through all my hangers until I find the little black leather jacket. It is very little. I try it on. It's much too tight under the arms and it won't meet properly across my chest. It's no use to me now and Sweetie never has my hand-me-down clothes, she always has brand new. It's no use to anyone stuck in my wardrobe, is it?

Even so, I feel guilty as I take it out and wrap tissue paper round it. It's so soft it folds up neatly into a manageable parcel. Then I search for writing paper. I've just got an old stationery set with goofy teddy bears dancing round the edges. I think it was a going-home present at a party. It's horribly babyish now. She'll probably laugh at it, but it'll have to do.

I sit on the edge of my bed, rest the notepaper on a big book, and start writing.

Dear Destiny,

I hope you don't mind me writing to you. I got

your address from the fan club list. It was

lovely to meet you (and your mum) on Sunday.

It was such a surprise to discover that you

might be my sister!!!

I cross out 'might be' and substitute 'are' because it sounds as if I don't believe her.

I'm so sorry Mum got so cross.

I start to write, She is a mean pig, because she is, but I scratch that out because it sounds so disloyal. I think about Hi! Magazine and the words they use when some celebrity shouts and screams.

She is going through emotional turmoil.

I'm pleased with that phrase. I hope I've spelled it properly.

I did tell my dad, just as I promised, but he got

a bit cross too, and wouldn't talk about it

properly. But don't worry, when he's in a good

mood I'll try again.

Meanwhile, as a tiny saying-sorry present I'm

sending you my leather jacket because you said