Wow ouch! I know when I was 2 I fell over and knocked my too front top teeth out. Um... I would say she'll probably be ok, she's just given them a bloody good whack, and chances are she's gonna lose those teeth. I wouldn't imagine it will do too much damage, if she really starts complaining or you notice it look overly bruised/infected I'd take her. But maybe you could take her to the gp just for piece of mind?