You could put her in local dance or acting classes, if they have something like that. Our local art center has cheap musical classes where the kids can be in the chorus and/or do a little solo or say a few lines in a play.
One thing to realize if your daughter grade skipped is that there can be a social downside to skipping. We have not skipped our older son for that reason- it's a tradeoff for the academic part, to be sure. He raised his hand in third grade this year and ran for student council, something he had never done before. He got elected over all of the other kids.
