Hi J.,
It's great that she already knows the sensation of having to "go" and wanting to take her diaper off. But at 2, sometimes, they don't totally connect that it has to go in the potty.
My best advice... try to get her to the potty at really optimum times (after breakfast and dinner, etc.) when you are sure she has to go, then read to her or draw on the doodle pro, etc. something to distract her so that she will just have to let it go on the potty. My little girl, 27+ months, used to sit on the potty without actually going, and then either peed standing up somewhere or went in her diaper afterward. That's kind of a good way of practicing the motions of "going" on the potty at first.
Be patient, practice a lot, never reprimand her for not going, just say (when she has an accident somewhere else) that she will make it to the potty next time, etc. It is so hard, but not pushing them and allowing them to come to the understanding in their own way happens much faster than forcing it, having them regress, starting over, etc.
Sounds like you guys are really on the right track!
Good luck,
K.