That's good. [He nods slightly. This is painfully awkward and he'll be glad when the smalltalk is forced to end because they've reached the first floor and be can just try to push her out of his mind--not that it will work, and he knows it.
He's about to try to say something, anything else to fill the threatening silence between them when the elevator jolts.]
Whoa! [He reaches for her with quick reflexes. Too fast, really. But she's steadied on her feet again regardless.] You okay?