[ Oh. Well, that certainly settles that. Scott is used to the Hogwarts Express by this point, so the bump hardly rattles him-- and of course he has the added benefit of being seated-- and he's in the perfect position to make sure that she doesn't crack her head into anything. Even if it means she lands on him, and he lets out a little oomph as his hands move to her waist, immediate and instinctive because he doesn't want her to hurt herself.

Blinking stupidly at her again, he ignores the heat in his face and instead offers her another smile, this one a little wider than the first. It's one part trying to be reassuring, one part what Stiles would refer to as Scott McCall's puppy-like charm. ]

It's okay, my best friend probably just took a nosedive into a wall and we've been riding the train for years now. [ Sorry, bro. ] Uhm-- sitting, right.

[ He suddenly draws his hands back from her waist, realizing their placement, and sort of-- tentatively reaches for her shoulders to help her upright. ]