Lee
I don't want to sound mean or anything because I know you love your daughter, but this kind of behavior should not be acceptable. You may consider Removing her from the home in a suitable rehab type of place for children like her. I am not suggesting to give away your child. Please understand that. Since you are the parent you have parental rights over your daughter that give you the permission to do what you think will most help her and your family. If you were to call a childrens hospital in your area and explain the situation they can refer you to different facilities that are capable of helping you, your family, and your daughter. There are plenty of resources for you out there. Get on the phone and call around. Get brochures, take a tour and get second opionions. I strongly urge you to take some kind of action. Medication is not always the answer to these kinds of behavior. Something else could be causing this. Fear,in your daughter, something traumatic that has happened in her life, could be a chemical inbalance. Seek help now, before something awful occurs. Let the pro's help you. I strongly urge you to seek help for yourself so you can vent and learn.