It was probably a very weak smile that she offered in greeting, as she stepped up closer to the desk, and the little wave that came with it probably seemed pretty half-hearted. It was kind of hard, trying to keep herself together without actually trying to put up walls and put on an act. It was even weirder that she didn't just abandon the proverbial ship and start joking around or showing him the camera-phone pictures of China that she'd taken - or, more likely than anything, get defensive and act like a total jerk.
Of course, the word-vomit that came instead wasn't really much better than any of those options, as far as she was concerned.
"You really probably shouldn't ask me that. That's serious can of worms material, there, Doc. Seriously, what isn't wr-" She stopped talking abruptly, just not even sure where she was going with this (not everything was wrong, but she was hard-pressed to find specific examples of things that weren't, right now) and not sure why she'd even thought this was a good idea, because her eyes were burning and she was worn thin enough that even with her walls up there had to be visible cracks.
Kat shrugged, then, and waved a hand vaguely towards whatever he'd been reading, carrying on as if she hadn't started just throwing everything on him. "-I'm sorry. Never mind. Nothing's wrong, I didn't mean to interrupt or... whatever." She took a step away from the desk and nodded towards the door (habit, more than anything; it wasn't like she generally used doors, anymore, anyway). "If you're busy, I can go."
[ooc: Sorry this took so long - I had one almost done and Kat decided that, no, she wasn't going to react that way after all, duh, so I had to rewrite entirely so oops!]