[One part of Aang wants to ask, but the rest of him knows he's not ready yet to hear the answer. If she tells him that she's being taught by a family of airbenders, he'll be consumed with thoughts of his culture potentially surviving. If she's being taught by non-benders, he'll be crushed by the confirmation that he really is the last.

Right now, he's hurt and already overwhelmed and he doesn't have the emotional resources for either option, so he forces himself to ignore the part that wants to know.]

If we end up staying a while, you mind showing me how to do it some time?

[He dutifully turns around and allows her to look at his back with the angry red mark left behind by Azula.] My waterbending teacher keeps meaning to show me how to heal, but there's never been much time for it. [Between needing to learn three different kinds of bending and being hunted down by the Fire Nation, teaching Aang to heal has been put on the back burner.]