I think she would end up being very blunt. Like saying 'there was this girl. She was fat and had had brown hair and said her name is Bwardjhgfg.' Or 'my dad told me this. My dad told me that. He didn't want to talk to me, he said it wasn't a good time, etc.' Don't be afraid of repetition and try to avoid writing the speech or onomatopoeia at all (e.g. instead of 'I ate...ugh, ate.' try 'I ate. omg, I ate.' or even 'I ate was given food' because one can pick out her dislike or even fear for the word) More like make reference to it. 

If you worry about a lack of detail, there's many ways to approach them subtly as well. When she writes it could be freezing cold, she might envy the looks of someone, a character could blame the surroundings for their behavior (e.g. 'It's not my fault my brother's room is full of junk and he didn't get out of the way in time') for example.

If you can, I know there's a book called 'curious incident of a dog in the nighttime' by Mark Haddon. It's about a kid with Asperger's, it's a good example to read. I know another good book about anorexia but can't really remember the ti
tle or author which is a shame because it may help quite a bit.

Personally, the best way is to handwrite all this xD not that you would have the time me thinks but it would get a sense of things.

Thank you so much for this. xD Your ideas seem much better than the things I've been writing. I will really take this into consideration when I write this again. Actually, the handwriting thing sounds like a pretty good idea...maybe when I have free time, I'll try to rewrite this like I was her, and not just a narrator. 

Again Raru, thank you so much. I actually like comments that criticize my work just as much as I like ones that compliment it. It helps me learn more as a storyteller and a writer. <3 

Day 5(9:43PM)

They took us to the town pool today. Oh, by the way, what kind of 'camp' doesn't have a pool, and has to take a field trip to a town one?! Oh right. The kind of camp that's a rehab...

You know, I'm really starting to hate this Amber girl. She always think's she's one-up because she's the oldest, and she's leaving here soon... I don't know. She's just a bad word. All pretty-long-hair-and-big-chest-and-equally-big-butt...you know. Ugh. Annoying.

But she treats the rest of us like...like we're babies (Well, Em sort of is, but still). And she expects us to listen to her like she's the queen of everything eating-disorder. God. I don't want my fist to meet her jaw, because they wouldn't be good friends, but I swear if she talks to me in that little voice one more time...

Man someone get me my smokes. I need a frigging cigarette before I die or something.

Yeah, I'm gonna die here.

PS-Mom came today and went through this while I was at the pool. I guess she didn't like the way I was writing things...I was too 'aggressive' or something.

Damn you, Mom.

~Catherine Elizabeth Duncan