http://www.youtube.com/watch?feature=player_embedded&v=0IYkQSvda1M
It looks to us like the girl in the white #15 jersey got tripped and took her rage out by getting in at least 10 punches, on top of some hair pulling. Incredibly she was charged with assault and battery for the attack.
According to the referee: "Some incidental contact ended in one girl going down and she just got up and started pummeling. It's unfortunate, it really is. Contact is a part of soccer, but when you retaliate like that, obviously, there is no place in the game for that."