Personally, I am not a fan of the changing schools idea - as a child that was allowed to change schools everytime things werent perfect for me - I'm not sure that it is very good for a child's social skills to be able to run away. What if the same thing happend again? Which I think is common because the child starts the new school still worried of the same thing - and the bullies pick up on that straight away. I personally think that I lost the ability to be in awkward or anxious situations as an adult because I always ran away from situations that in hindsite really weren't that bad.

Have you thought about some kind of outside school activites? Something to boost her confidence and let her make some friends that are the same age that have you around most of the time when she is interacting with them?

I hope that someone can be done within the school - I would definitely get her teacher involved - and make it clear you really arent happy and that moving her is an option - so that she/he knows you are serious.

What a horrible situation for you and her to be in