Karen W,
I would have the school psycoligist talk to her, something has triggered this and they should be able to figure it out. You need to nip it in the butt now before it gets worse. When my father had passed away my daughter was having problems. She was actually sreaming in her sleep. I had the psycolgist talk to her, he would talk to her while they played cards. He gave us helpfull hints on what to do and they did work. I wish you all the luck. Karen W.