My monitor is on its last dieing leg so I couldn't see the photos as well as others likely can. Wish I could see her ears...after looking at photos again another "possibility" might be a springer or some type of of pointer X lab mix. She actually doesn't really look all that "pittie" to me either...I may have been swayed by the earlier post. Even if she is part pit most of them are absolutely wonderful dogs.
I would definatly say some pit probably. The nice broad head says alot. She could also be a mix of several breeds, and just a heinz 57 mutt and we will never know. I would first go with pit/lab/springer, lab/pointer, pit/lab. Those are my biggest guesses..
You should not have to worry about agression if you train her right. If you don't give her and guidance, anything can happen. Pits have been given the worst reputation by ignorant people and the media. They are fun loving, and extremly smart. They tend to be active, and if you don't give them somthing to do, they will find it. Work on obedance, and make her part of your happy family. Take her for walks in the park, so she can meet people and other animals. Love her for everything she is, and maybe something things she may not be.
At the age of 2yrs, she probably does have most of her height. she could broaden out a bit depending on her mix.