"(spoiler) She was sent by Ansem to Destiny Islands as a child, to watch Sora maybe? Who knows? (end spoiler)"
I found this in the Faq Pimp6005 made, but who is he to kairi? A father? Uncle, friend?
PS Gamers Network - My new website, please contribute. Includes Wii and 360 Forums as well. http://z15.invisionfree.com/PS_Gamers_Network