Kingdom Hearts - ... ... Sure, why not?

If Namine was made when Kairi's heart left Sora's body, does that make Namine Sora and Kairi's child too?

That's what I've always wondered. Xion is more like of a clone of Roxas, and was shaped by Sora's memories. Namine was born of Kairi's heart, but Sora's body and soul due to Kairi being unable to manifest a Nobody the usual way. So, yeah, she kind of is their daughter in a way.