I would tend to agree with what others have posted. Moving her seat in the classroom or moving classrooms, is probably warranted in this instance. It sounds like this child is having difficulty dealing with her emotions and is at times unstable. Someone with that kind of emotional instability could easily escalate their behavior into a physical confrontation. Having tantrums and emotional meltdowns at her age is symptomatic of someone maladjusted and probably in need of psychiatric care or counseling. Those are things that neither you, nor your daughter can provide for this girl. If your daughter removes herself as a "supply" of constant compliance and deference to this girl's wishes, then she will eventually move on to find someone else to make her feel important or "special". I would also follow up with your daughter's teacher to make sure that she is communicating some of these issues to the girl's parents.
