She's stubborn, and by the sounds of it, so are you. At 13, the chances are that she does know better than you, but I know from my experience that you're at an age when you also think you are right all the time. Because you clash, it doesn't mean she's a bad mother, she has your best interests at heart I'm sure. We have a phrase here in the UK that I'm afraid applies to you at the moment: Suck it up. You'll probably have a 13 year old child one day. You'll see how much hard work they are!