The dry commentary does more to pull Arthur out of his own head than being delicate with him would, because being called out gives him something to focus on. Namely that he obviously can't get the jump on someone who can fucking see him in his pyjamas scrambling to arm himself, so he might as well try working with her.

He forces himself to take a deep breath, swallowing thickly, but he manages to nod. "Alright- alright." Another breath, and he forces himself to stand up straight, but he keeps both hands on the dresser. It's grounding, more than anything. "I'm from- Massachusetts. I was in Massachusetts, last thing I remember, so. So- fuck."