I am going through a similar problem with my 7 year old daughter. Another parent who I WAS friendly with told me that my daughter was bossing all the other girls around during class time and play time. I got a diffrent story from my daughter so I contacted the school to ask their opinion on the matter. They told me that whilst there have been a few incidents at play time (not just my daughter) nothing during class time it has been dealt with and they are not worried and neither should I be. However, this parent still insists that it is carrying on, this parent hasn't contacted the school or discussed it with them and refuses to accept what the school have told me. Its worrying me and (rightly or wrongly) I have told my daughter to keep her distance from this girl/s in question. I think as parents we take personally the knocks our children take in life.I know how you are feeling, its the worst feeling ever because they are at the age where THEY have to deal with it under our guidance but ultimately they have to go to school and face this situation not us. I think it helps to get a bigger picture sometimes, maybe contact the school and see how they view the situation as they must come accross this all the time, if your daughter had never had any friends at all at any time then I'd be worried,just remeber yor daughter is not the only one to go through this.Good luck.