I think dad should have cleaned her room out while she was at school. Let her come home and fid her room bare. The law where i am from states "food and shelter" have to be supplied until they are 16. So give her an empty room,and food to live. Nothing more until she learns a little respect. Each day she does what she is told? she gets something back.
PS. I also put on my Facebook account,and emaild to all my family and friends.