Are you sure that she wasn't trying to play with the girl? When my boss' dog was a pup the first thing she did was come up behind me and grab my hair, but she just loved to play with hair.

In the first instance I'd say that Pandy was just reacting out of fear. She probably thought she was protecting you or herself.

You should do alot of socialization with her. Take her for walks every day and get people to give her treats. That might help. Maybe an obedience class too?