[It's a lot more hostile than he's been with her in a long time, and it visibly startles her. Luckily, it almost coincides with his sudden exclamation, so if he asks (unlikely) she has an easy out. Still, she wilts around the edges and hugs her pillow a little tighter, falling silent for a moment rather than firing back a dry retort, the way she usually might.]

...right. Uh, I guess... just, um, give me a yell if you need your fingers patched up later. You work with pretty volatile substances, so please don't just tough it out.