[Katara gives Jet a small smile, but there's a twinge of guilt to it. After all, his entire presence is somewhat of a reminder that maybe things would have been different if he had lived in her time. A reminder that maybe they hadn't done all they could have to save him.]

I'm glad you're here, too. Safe.

[There's a moment of silence as she internally debates on what to tell him about. What should he know? What shouldn't he know? In the end she decides that there are some things she should warn him about.]

You probably don't remember, and you might think I'm crazy for saying this, but you were here before. This happened to Sokka and Toph, as well; they showed up in this world, were here for a couple of months before disappearing. They came back eventually, but they completely forgot about what happened during their stay here. I just thought I'd warn you in case any strangers tell you they recognize you or act really friendly.