[That was called "passing out", actually. Though if she'd been getting regular sleep, she might actually have handled it better anyway. Which is what his immediate response is, anyway.]

You need to be getting more sleep. Not counting this morning, how much sleep do you get? Four hours a night? That'll exhaust your body and you won't be able to react quickly or efficiently if you need to.

[He rubs the back of his neck, which she almost certainly would recognize as one of York's most common indicators of stress.]

Speaking of which, I'll take the couch tonight.

[Ignore most of what she just said? Ignore most of what she just said.]