Help please

So about 2 years ago I was raped while I was at a boarding school. I started to starve myself to cope with it and lost about 50 pounds in 3 months. My parents eventually found out and pulled me put of the school. I have gotten help for the emotional problems but my parents force fed me to gain back the weight and I gain it and 90 more pounds. I know if you starve yourslef you matabolism stops working as well so is there anyway to fix this or am I stuck overweight? Please help me I'm ready to be done with the whole situation but I can't till there is no more signs of it.