HI lucyhiggs. I'm sorry to hear this. Do you know if there is any professional help involved? If there's no options for that, how about a school counselor? That is the first place to start because we want to make sure your friend gets the proper treatment. However, no one can fully recover unless they truly want to commit to recovery and a life free of
ED.
As far as what you can do, the best thing is just to be there to listen. Let him/her know that he/she's not alone and even ask how you can help. Simply asking is a great way to express your concern and that you care. One of the things I wish people would've done in my situation is just letting me explain myself and teach them how to help.
Everyone has their own story and one of the worst feelings in the world, in my opinion, is being misunderstood. The best way to know how to help your friend is simply asking how you can help because everyone is different.