"Machines don't get tired," she pointed out, wearily. She wasn't sure if they'd had that part of the conversation when they'd met; she'd told and not told so many people, and it was getting harder to keep track of it.

"It's easier to have fortitude when you know that you're defending the last of humanity, and they only number in the tens of thousands." Another gulp and she managed a smirk, just barely. "'Course it also makes a difference who's leading you during that sort of thing. I'd stay awake until my body fell apart on me if Old Man asked me to."