[There was a momentary pause before she finally smiled.]

So I see.

[Then she followed his gaze to his door, turning to rest her back to the railing casually. If she was disconcerted by his response, it didn't show.]

I've been here long enough to question anyone new who looks too youthful to be an instructor. I guess I shouldn't say much since I'm probably one of the youngest members of the faculty.

[And then she laughed.]