How do I get my Mom to stop bugging me about me having to lose weight?

Hi, I'm 14 years old and I weigh around 113lbs. I know that's on the heavy side but ever since I recovered from anorexia I've gained more weight. So, now I'm at 113lbs. My mom only weighs around 100lbs, so every time I go shopping she would always tell me how big my stomach looks. How fat my legs are. How thick my arms are... etc. It makes me less and less confident about myself. It makes me depressed because I'm trying so hard to please my mom by being healthy, but I just can't lose the weight that she wants me to lose. My diets last for like a week then go off into a huge binge. Then when I eat too little my mom threatens me with the idea that I won't be able to grow if I don't eat enought. So hypocritical hun? Well, right now I'm really confused. I want to lose 15lbs but I don't know if I should PLEASE HELP!