Can you talk to your school counselor or another trusted adult? I can sort of understand your mom's view of dealing with it with no outside help, but sometimes you need to be proactive and ask for the help. Of course, with you being a minor getting help has to include your mom being willing. She may not want outside help because she is scared to admit that you have an ED. I am 31 and have been dealing with anorexia for about 16 yrs off and on. I never asked for help when I was your age because I wanted to be seen as perfect. I have now been in treatment twice and am doing great this time around. I had to miss my daughter's dance recital due to being inpatient, but I had to take care of me in order to take care of her. Sometimes we have to put our lives on hold so we can get the help we need to live our lives. It is not an easy journey, but one that is managable with the right help. I hope you are able to get that help with your mom's approval.