[Katara stops walking. And resists the urge to just immediately bend Azula out of hearing. Instead she turns and meets Azula's gaze, her stance relaxed but ready. The little jibe about Sokka finds its mark, but all it takes is one look at Azula for Katara to be completely certain that Sokka is fine. She's no Aku, Sokka can take care of himself, and if Azula had hurt him she would be a lot more smug.]

Azula. How unfortunate. Let me guess. Now you're hoping to learn more from me? Give me one good reason why I should help you.