Well, one good thing is her "awareness", and wanting a bum change. That is pretty big when it comes to potty training.
When I potty trained my 2 boys and 1 girl (so far) I actually did do the undies around the house. BUT you don't just let them roam and wait for them to tell you they need to go! (not yet anyway) Every 20-30 minutes or so, I would say "time to go potty!" super-fun-happy-excited-voice, lol. We also did rewards (stickers, treats, etc) from time to time. I know for some people, the jury is still out on that, though.
I didn't really use pull-ups, unless we were away from home or they were napping. None of my kids woke up dry, even when they were totally potty trained during the day. So I didn't wait on that.
Good luck!!!!