[Aang nods along with what Katara says, and even though it's not exactly happy news, he feels relieved to be moving from the intensity of the former subject. He's a bit dismayed about the absence of Toph and Appa, but his conversations with some of the others have prepared him for that possibility.]

Good old Momo! That's a relief. I'm not too worried about the others. It just it would have been cool if we were all in the same place. [He pauses for a moment in thought] I hope Appa shows up. All my stuff is probably still on him too. And Toph's already gone back... how long have you been here, Katara?