For Rabbids whatever mini-game you finish is available in the multiplayer mode. Once you get about halfway through the game, the second half of mini-games are for the most part the same as the first half, just a more difficult version (e.g. bathroom doors v2 has an additional obstacle). Like most mini-game games you would have to finish the game to unlock all of the mini-games.
Im not sure if she will like it because she finds doing stuff that is motions sensored much easier. Buttons are harder for her. Thats why I am thinking between Rayman and Super Monkey Ball. She has only tried Super Monkey Ball though. I wanted to know if she would be able to play Raymna becuase its looks like more fun of a game.