Would you want your child in a school with a pupil that has an obvious personality disorder along with her mum?

fixated on your daughter ?? this kid has been through seven primary schools also the fact that the mother colludes with the child, it has happened before and is happening again , how do i deal with this , school not listening at the moment, despite several complaints etc ?? and that children get this hle all the time , when not getting attention feigns illness on school trips and mother backs it , this also a pattern in personal life too. Mum says she and her daughter been bullied in ALL the schools. My daughter is laid back happy and confident , but i have a parent who is lying to other parents i don't even know, to discredit my daughter, as she is moving cles ! All my kid has done has made it quite plain that she isn't playing her games and i have told mother that too ?? How would you deal , as i have never come across this before , well only in a secure unit i worked in years ago ! Who will listen ?? This mother causes havoc where ever she goes , so i know it isn't me ! How would you deal with this ??