It's such an innocent offer, but it still makes him pause for a moment, because there's really no telling what a ghost might actually do. So far it's simply items moving around their space and their paintings going blank when they're not around, but he doesn't like to think what might happen if someone like Dutch were to try to interfere.

"I don't know," he says honestly. "It might not be worth the risk. So far there's been no particular danger, but there's really no telling what else might happen before we know what's really going on. If it's more than just a simple spirit..."

This is part of what he's worried about in getting closer to Dutch and Matthias. Being close to him puts them in danger, especially in a situation like this and he suddenly thinks he must be a fool to have her here when he's not even sure what's happening.