I know I said this a lot before, but Spencer Ellis Norman's most recent topic inspired me to make this. Because of this https://www.youtube.com/watch?v=M32ojNSew7o, something tells me that the same will happen to Kairi sooner or later.

 

If it does happen, what sort of things would Namine say to her other half?

 

Also, I think Brittany Snow will be the one reprising Namine this time.

She's obviously coming back

As much as I loved Brittany Snow's Namine and would love to have her back, it doesn't seem likely she will be back; she has become an even bigger actress than she was when she did KH2 and she would cost a lot more than Megan Jett Martin would.  Unfortunately, a lot of actors see VIdeo Games as a small job and very few stick around the Video Game scene for long (Praise the heavens for people like Hayden Panitierre and Haley-Joel Osmet).

She will undoubtedly be back. No questions asked.

It was suggested by Data Ansem that she is among the people that who were deemed lost forever, but can be saved. I think at the top of my head he referred to her as ' treasured memories'. Also this could kickstart the whole debate again whether or not she can wield a keyblade due to being Kairi's nobody etc and the way things are going, everyone seems to be getting one ( unchained chi pun not intended). Also who wouldn't want to hear Namine's Theme again?

I bet that Namine would ponder why she doesn't have a keyblade herself. And might bring it up while talking to Kairi.