Clearly this is breaking the ToS of kickstarter so I hope it gets taken down
But just imagine the shitstorm if it is
"Little girls dreams to make video games shut down by kickstarter" etc.
Easiest way for them to avoid this is just to return all the bonus money, and just give her the money from the contributors of the 800$ goal.
They really, really should do this, since this isn't a project that can make use of any extra money. It's a payment for an RPG camp, right?
It's overall not in the spirit of Kickstarter, at all, but they'd have a big PR problem if they removed it, I think. If they just give her the goal money then it should be fine -- along with a press statement stating that this project couldn't make use of extra money, and that they will be implementing such an option for future kickstarter authors.