My 12 year old SD treats me like crap. She actually treats everyone who allows her to the same way. She is always right, and will argue with everyone. Her teacher, her doctor, her granparents, her friends. Everyone has to do what she wants or there is a scene, drama, fighting. Her friendships usually last a couple months tops, because she treats them the same way and they get sick of it. She takes things, lies, makes up awful stories.