I think maybe they come out into the grounds in nightwear. But no, in typical anorexic stype they have read the fashion magazines literally. This is their version of thin girls in strappy clothes.The girl in the petticoat talks to me, as Emma has done on occsasion, in a rather grand style, as if she is a 'lady' of some substance and I a visiting guest.Do they chat much about clothes? I ask Emma in the car.She shakes her head.So, does she, Emma, see the difference between underwear or nightwear and 'going out' clothes?'Yes,' she says, her voices strained again. 'But it's one of the things you don't know properly when you're ill and confused. You see these pictures and the people in the magazines are real for you.

Why?’ She nods. ‘She had everything: a family who loved her, friends, activities. Her mother wants to know why she threw it all away?’ Why you want to know why? Step into a tanning booth and fry yourself for two or three days. After your skin bubbles and falls off, roll in coarse salt, then put on long underwear woven from spun glass and razor wire. Over that goes your regular clothes, as long as they are tight. Smoke gunpowder and go to school to jump through hoops, sit up and beg, and roll over on command. Listen to the whispers that curl into your head at night, calling you ugly and fat and stupid and bitch and whore and worst of all ‘A disappointment.’ Puke and starve and cut and drink because you need an anesthetic and it works. For a while. But then the anesthetic turns into poison and by then it’s too late because you are mainlining it now, straight into your soul. It is rotting you and you can’t stop. Look in a mirror and find a ghost. Hear every heartbeat scream that everythingsinglething is wrong with you. ‘Why?’ is the wrong question. Ask ‘Why not?

When you have a persistent sense of heartbreak and gutwrench, the physical sensations become intolerable and we will do anything to make those feelings disappear. And that is really the origin of what happens in human pathology. People take drugs to make it disappear, and they cut themselves to make it disappear, and they starve themselves to make it disappear, and they have sex with anyone who comes along to make it disappear and once you have these horrible sensations in your body, you’ll do anything to make it go away.

The reasons for Emma's illness and for her decision to allow life in, rather than die, are intertwined and involve the beginnings of her feelings of belonging, of safety and of competence to be in the world.

Forgive me for being chipper, but despair is desperately dull.

Deception' is the word I most associate with anorexia and the treachery which comes from falsehood. The illness appears inviting. It would seem to offer something to those unwary or unlucky enough to suffer from it - friendship, a get-out, or a haven - when, in fact, it is a trap.