Toph heard the uncertainty in her voice and put a hand to Terra's shoulder. This wasn't so much a reassuring gesture (as Toph wasn't sure of the feelings Terra was experiencing) so much as it was Toph trying to tell from Terra's pulse what she was feeling.

"Hmm." Toph was quiet, then blurted out, "She makes you feel a little nervous huh? I figured you knew each other. Well, I'm not sure what'll happen, but she seems kind of just wanting to get reaccquianted with old faces. I'm guessing this place can be pretty lonely without people you know. Besides," this time Toph patted Terra's shoulder with genuine good feeling, "you've got me here in case something goes wrong. I may not look like much, but once we're out of this snow, I can be pretty scary."

Toph figured Terra might just scoff at this, and that was ok. There was no need to show off.