Do Anorexics actually want to get better?

I'm sorry if I offend anyone. I am the father of a 21 year old who is severely anorexic. Hopefully she will be admitted as an impatient (thanks to everyone who replied to my previous post).I was talking to her about treatment and what she expected to happen and all she kept saying was she wanted to get better but she doesn't want to put on any weight. I tried to explain that she needs to put weight on but she just got upset. We are trying to help her but it's just too difficult to get her to understand. Sorry if I am ranting.