Bubbie

I am trying to figure out how to remove as much of the background noise from the audience at my daughters talent show. My wife filmed the event for us, but the audience babble was quite loud and she started out quite meek, to say the least. I was wondering if there was a way to seperate her voice from the rest of the croud, so as to better enjoy her pristine sweet little voice. Any help would be greatly appreciated. Thanks.