I am in the middle of the teen angst with my son. And what I see with the girls....oh my let me tell you I wish you all the luck in the world. Just give her the restrictions/rules of what is expected of her and stick with them, give her the love (with lots of)hugs everyday even though you want to strangle her and we tend to forget to do that everyday when they are (these aliens) teens, and stay on top of them at all times I don't care if they say "you should trust me I am not going to to anything and I gave you no reason to not trust me" (a quote out of my sons girlfriends mouth) I took her straight home after that because I knew what wool she was trying to pull over her mom's eyes. If you let off just a bit because you think you can trust them, think again they will take that inch and run 100 miles. My son can make me see red and black out with anger oh and I can't forget the anxiety attacks that I went on meds for that started last year. (they are better now) I kept asking my husband and a few friends if I could quit my job as a mom for awhile while he was this alien. I wanted to ship him somewhere or just leave the country myself. It is rough and it is hard the levels and stages these teens go into and to watch and fully know yourself exactly what they are think and up to because let me tell you I was no angel as a teen that is for sure, you have to stand your ground and do not waver. They will test every inch of your emotinal spirit and do not let them see you break down because they know they have won. The two of you (your wife and you) stick together, cry on each others shoulders and give each other all the love and hugs you can because if the two of you are strong and have that emotional bond through all of this your daughter will know that she cannot crack either one of you. And you know if you need to just unload about your gates of wrath. Do it because any one of us who have teens or had teens knows what you are going through. And have your wife blog or something because she can get support or for her to find a mother of teen forum because talking about this to others who understand is soooo helpful. You create life, life does not create you.