Yay! I am glad to hear that your mom is going to help you and that you will find some relief. The forum here is a great place to vent/let your feelings out, as you have discovered already!
I am so glad your mom is on board with you. Having a good, patient, support person is great! I would encourage her to find some ED/anorexia books to better understand what is going on (that is what my mom did when she finally decided to believe me that I had a problem). I don't remember the name of the ones she had, but I can ask her if you have trouble finding good medical ones. (I avoid certain ones, because some only trigger/unwittingly suggest ways to further the ED)