What will my weight be? (eating disorder help)?

Hi everyone I am 14 years old, 5 foot 6 and a half inches and have just started recovery for anorexia. I have yet to meet with a nutritionist but I worried about weight gain. Right now I weigh 107pounds (up from 105!). What is my ideal weight that is still small but healthy? I don't want to gain alot of weight! Please help! thank you!