[The immediate change of affect on realizing he was being observed does nothing to raise Cheris's estimation of his age. Plenty of tall, lanky kids are still just kids. (Plenty of grownups too, not that most of them would like hearing it.)]

Just another passenger. My name's Cheris.

[As she moves, he might notice a wince here and there, favoring the ribs on her right side, but she smiles wryly at his ironic remark.] Let's hope there are no weird biologicals loose, on top of everything else. I have some disaster training; do you want me to check it for you?