[ He doesn't scare her. He had when they'd first met out of pure shock, he had when he'd begun his display of... proficiency in killing. But since then, he'd been the protector, not a threat. She doesn't believe for a second that he'll hurt her.

Not physically, anyway.

It isn't news that surprises her; Elizabeth hadn't gotten the impression that her "partner" had known much about the job aside from "bring us the girl and wipe away the debt." He'd been open about his lack of knowledge, hadn't seemed bothered by that, but... more than that, she'd never gotten a nefarious vibe from him. Hard-headed, persistent, violent, but not scheming. ]

You did those things, Booker, that was ages ago. I know what you meant for me originally, but things have changed! I know you would never trade me away now.

[ Another person, someone with less faith in people, might have added a tentative "right?" at the end. Elizabeth doesn't. He pushes her away and she pulls back, calm and confident in her assertions. ]