Congratulations, you made the right choices for your friend you did not contribute to her eating disorder. You prevented her from making bad choices that could have hurt her physically and mentally. Although she did not meet her goal she had an amazing week with her friends and got to experience so many memories. The best step to take next would be to talk to someone about her and try and get her help to prevent her from making bad choices. She loves prom and although she may have felt a little bloated or chubby in her dress you and her other friends made it a night to remember anyway! You won!