hmmm....ok. Well, depending on the confidence of your girl, this could be true. Maybe she was too scared to make a deal of it. I think it's wrong, definitely, and something should be done. The fact is, if it is true (which it could be) then she needs you to help her out. She needs you to be there for her, not getting aggressive.etc. I think that you should try get the names from her and tell the principal.