Pre-teen angst. Hormones. Girls...
There is a great book series for this age-set called "American Girls" series. You can find it on www.amazon.com
I even got it for my girl already.
My late Dad, when were that age and in our teens, had this approach:
1) he knew that we being "girls" were prone to this... and he NEVER tried to make us into something we were not.
2) he made sure he kept himself "approachable" to us, and for ANYTHING we wanted to talk to him about... thus, if any problems occurred, we would (hopefully) go to him first
3) he did not tolerate "sassy" backhanded mouthing off... and he put his foot down... took away phone privileges, going out curfews etc.
4) BUT, he gave us "warnings" and we knew he meant business and would uphold his consequences... hence, we pretty much did what the "rules" were... but we also knew that he RESPECTED us.. and he NEVER talked "at" us, but with us.
5) Girls, like any age, ARE emotional... so partly they can't help it and partly they need to LEARN how to circumvent it... and if their friends are the same way, they are likely to "copy" and do the same thing
6) giving "the look" with the eyes is just auto-pilot for some kids... but, make sure that she knows what boundaries are... and what you will or will not tolerate... my Dad picked his battles... versus, my Mom would NIT-PICK EVERYTHING she didn't like.... so GUESS who me and my sister listened to more? It doesn't take rocket science to guess that.
7) The main thing, was that we got respect and was able to express ourselves 'safely" and knew we could... so likewise, we had a "respect" for our Parents... they treated us as THEY wanted to be treated. I guess, that was basic old fashioned child-rearing for my Dad.
8) Also, my Dad did not try to "save" us for every little crying we did... sometimes he would just say "yes, I know it's hard... but crying is good for you too... you can vent and when you are done we will talk about it. No, you still can't go out until 11:00p.m. like your friends..." End of story. But, he would offer alternatives.. like, having our friends over at our house and they can sleep over or something. (and yes, he always hugged us even amidst our crying and offered us his shoulder).
9) Most IMPORTANTLY, and no matter what, we also KNEW that my Dad always "liked" us... always. THIS simple fact and "feeling" made us more amenable in our interactions. Versus with our Mom, well, sometimes we just didn't "know" IF she "liked" us... depending on how we acted and her reaction. This "feeling" for a kid, really sucks. So I learned and do NOT at any time, convey this attitude to my own children. I think it's an important aspect, that some Parents forget and it can very much affect how a child will cooperate or not. A child really needs to KNOW without a doubt, that their parent truly "likes" them too. I would hear my Dad say this.
Just let it happen... parents can't "fix" every crying episode (especially if they are doing it on purpose to irk you), but at the same time, WE have to KNOW when something is TRULY "wrong" and they NEED us. Keep approachable to her, keep available, keep comforting... a child never outgrows the need for comforting no matter how old.
The thing is, you want to ALWAYS be "in-the-loop" where her life is concerned, so you can keep tabs on her happiness/troubles/or anything, especially at this age.
My Dad, I don't know how he did it, but he kept us "in balance" pretty well for us being typical "girls." My Mom in retrospect, had less "tolerance" for it and was less approachable. So we tended toward our Dad... as he always "understood" us, for better or worse. And thusly, he was our "confidant." THAT is what you want to be for your child, no matter what.
Don't stick labels on her. This is not good, especially for a pre-teen or teen. My Mom, bless her too, did "label" us, but my Dad would never do that. It makes a HUGE difference in a child.
Good luck,
Susan