You are not on your own I have a 15 year old daughter who is vile. We've bought her up to be kind caring thoughtful and helpful to no avail sadly. She won't do her home work unless forced, she back chats teachers. She doesn't use the Internet safely (She has list her phone perminately) We have to lock everything in a safe. She takes what she wants when she wants, acts hard done by and tries to bully us around the house to get what she wants. We have been good parents teaching her right from wrong and being strict with things when the need arises. Some days I despair and feel like a right failure