You really need to get involved! The best suggestion that I can give you is that, if you are really concerned about her, and if she has been losing weight, you can always look up an Intervention clinic on the internet, and see what you can come up with that is the closest, and you can get a time to go and have a chat with the staff, and see if your daughter would be willing to go to a clinic or at least a dietician or a doctor or a therapist. But if you can just help her through it by yourselves than that might work too. I dont know if any of this advice will help you at all, but I gave you all the advice I have for this. GOOD LUCK!