I'm not sure if I've done the right thing. Dd has a history of mental health issues but we thought were pretty much on an even keel. In the past as well as being verbally abusive she has smashed up the house and hit me, her step dad and her sister. We got home about an hour ago. Dd is doing GCSE 's right now and hasn't done a stroke of work. Has spent the weekend in the back garden smoking and drinking with friends. Ignores all suggestions to revise and thinks it's all fine. When I came home to find her laid on the sofa once again it really got my back up. She's such a bright girl with so much going for her and She's pissing it up the wall because She's essentially lazy. I spoke to her when we came in about revision and she was snappy, verbally abusive and swearing infront of my 9 year old. Stormed out the room slamming doors. She then overheard me saying to her step dad that I was fed up with her doing no work, that she needs to pull her finger out, she came back into the room and hit me repeatedly on the shoulders and back, quite hard. Dh had to pull her off. We called the police because I cannot make her understand how unacceptable it is to hit me. She says I am now not her mother and never will be again. I feel so hurt. I don't know if I've done the right thing.