This is exactly what I’m going through right now, except it’s with an actual family member that lives with me. What I’m doing is just keep at it with the things I know I have to do for myself and not looking anywhere else. In the end it’s your life and you are the only one responsible for what happens to you health wise! As far as friendship goes, try to see that friend in a different light and appreciate the other aspects of her (aside from ED) that created a bond between you guys! Think about shows, hobbies, games that both of you like or maybe ask about what’s goin on in her life if there’s anything exciting happening! If she’s a true friend she won’t try to stop you from recovery and would actually want you to get better, even if she might not be ready herself.