...Cloud? [ It's only natural for her to try and guess the "mutual friend", but she's also puzzled who it would be. ] Oh, so you know everyone else too! Um--

Well, I think you should meet everyone from AVALANCHE who's here, but you might not want to mention that you met me when you do. It's been a while since we've seen each other, and...it would probably distract them.

[ Queen of explaining, Aerith.

She's slightly worried Riku would end up getting interrogated along the lines of WHERE DID HE SEE HER, which is not what anyone needs. ]