WOW that is such a hard situation. I'm so sorry I have nothing to offer... I guess I can only imagine what I would do if I were in your situation, and that would be to try and get a third part involved to help see things more clearly. A good friend of mine was having problems with her daughter's teacher and after a one on one meeting nothing was resolved, so she brought a friend who was a teacher from elsewhere in and the principal to sit and discuss it again. This time they saw results. I hope that they listen to you & your precious girls [-o<