I have a daughter who is always trying to compete with her older sister. One time she was chatting online with some creepy dudes in private. She saw her older sister chatting with teen friends and thought it was the same thing. I would try to lay some ground rules and keep at it. Being a dad ain't easy on the nerves with girls. Rules get broken, but just make sure your relationship with her isn't. Daddy time is important at any age.