Encourage her to make more friends, tell her not to put all her "eggs in one basket" ... remind her how beautiful she is and what a nice daughter you have, she can have plenty of other friends!
I have been there with my son, so i know how you feel, last year was terrible for him, i even had to take him for counselling, because he just didnt see "the light" anymore. It's heartbreaking for parent to watch their child hurting, and getting bullied. Thank goodness he is passed that stage, he can now stand up for himself, he has grown so much this past year that he now belongs to the taller kids in he's class, while last year he was one of the shortest, this has boosted he's selfesteem tremendously. (specially for a boy)
Hang in there Kim, don't let her change schools, because that's not going to solve the problem.
Let her rather join a club or something that she likes. Invite some boys and girls over to your house for a party or a get together, let her meet other kids, including kids from her current class, tell her to get to know them better.
Best of luck, and keep us posted
