Considering the dreams he'd been having, eating people might be a valid concern, but he just shrugged, "I think I can abide by that. And if not?" He shrugged, "For what it's worth, I trust you to do whatever needs doing." Whether it was literally clocking him over the head and hauling him off, or doing it metaphorically by way of exorcism.
That and if it came right down to it, he trusted her to actually do him in, which was weird to him, that realization, he hadn't trusted anyone that far, not even Niko, and Niko had killed him before.