I had to really think about this one, I have 4 who are teenagers, and for the most part I have no issues, my 15 year old DD is probably my most strong willed child, and I can rememeber a time where she thought she was the boss, could do what she wants ect,.. I am a lot more in your face when it comes to outright disrespect, she even went so far as to "jump" out of our moving vehicle once, I actually have no clue what started the arguement, but I was being cussed out and called every name under the sun, I tried to ignore it, I was driving and trying to avoid an accident, but that only seemed to escalate her, anyways I ended up pulling over and getting out, once I caught her I was in her face, I have only been that angry a few times in my life, and NEVER towards one of my kids. I tried to get her into the car, but she is as big as me...almost. When that didn't work I drove off, I didn't leave her exactly cause we live out in the country and it would of taken her a day if not more to walk home, but after a few miles I came back picked her up and went home, she had calmed down a little but I hadn't I walked in our door went down to her room and took everything out (2 days prior we had gone school shopping which was 2 weeks away) She got one outfit a pillow and a blanket, no sheets, No T.V, no computer, no video games, MP3 player nothing, and man she was P.O'd, but I did not back down, once she shaped up, she earned stuff back, I even took her make-up, blow dryer and her towels (it was very hot she could air dry). I explained that when she could be a member of the family and treat me with some respect then and only then could she start to earn it back, I also let her know that I was not above calling the cops if she so much as looked at me funny, and I would of but I think she finally got the message, I haven't had anymore real problems with her except for the normal teeage things and it has been just over a year since our last incident, I still take things aways if she is out of line, but I think she likes her stuff more so she tries to behave and she does for the most part, she is even my most trustworthy child, the incident I am speaking of wasn't a one time thing it had been escalalting for a few years. I am not sure if I helped any but I wish you luck, keep working on the therapy, see if someone can come to your house.....Good Luck!!!!!