You have to get tough and not allow her behavior , perhaps you are feeding into it, and she realises that you back off when she is confrontational,when she starts the outbursts walk away do not get into it, I feel you both have yelling matches., it simply starts a war, take away something that she likes a hobby or an outing , tell her that she cannot go to her firends house, it has to be something that matters to her , it could also be TV or the PC priviliages. And be consistant no threats to do it ,do it. Good luck
I am no expert but it definitly sounds like your daughter is controlling you!
It almost sounds like she is taking advantage of you. Children learn what buttons they can press and what buttons they cant, you will probably find that she does not react like this at school because her teacher will not tolerate it, and if she did act like this there would be a form of punishment or time out.
When you turn the Television off and then she turns it back on do you leave it?
When she screams and yells at you do you leave it?
These outbursts should not be ignored, if she does these things you need to give her some form of time out or make her understand that what she is doing is not acceptable.
I have a 7 year old daughter and believe me she pushes the boundries every now and then, she can be cheeky and backchats sometimes but she knows her limits.
i hope this helps, but if your daughter still proceeds to act like this then maybe you need to ask for a professionals opinion.