I am a mother of 15 year old daughter. My daughter behaves rudely to her father. He is worried about her, and we don't know how to control her. So to develop her understanding with him, he stops her all outdoor activities, and also now she is not allowed to speak with her friends over the phone. He is suggesting that if she does not change her behavior with us, she will never behave properly with others. What is your opinion on this matter?