In Birth by Sleep, she is sent by her master, with her two friends, Terra and Ven, to search Master Xehanort and his apprentice. The game is yet to be released so few information is known as of now. Nevertheless, she seems to worry often and a lot for her friends and care a lot about them. She has been shown to travel to different world, mainly Destiny Island, Cinderella's world, Sleeping Beauty's world, and Lilo and Stich's world.
We also know that by the end she'll lose against Master Xehanort durig an encounter, but any further fact are unknown.
