My 18 year old daughter is a good girl, but one thing that seems to be increasing is her arguing. I try to hold a calm discussion with her initially, but it always escalates to an argument because she cannot accept whatever rule or dicipline I am giving her. Slowly she begins to argue and require further explanations to the point I have enough. I do not feel I have to give 2-3 repeated explanations just to have to explain 2 more because she is not satisfied with my answers. Today I turned off her cell phone after I had enough and she threw a tamtrum. I remained quiet and would not discuss it further until she calmed down. To this time she has calmed, but we have not talked. Maybe a good night sleep will help.