I see...

[What a massive undertaking... she gets it, though. Of course he'd want to be sure for himself.

So she thinks that over contemplatively as they walk, and then finally, suddenly:]

Do you trust me? Um--enough, I mean. [... Wait, no, that didn't come out right.]

I mean--we can split up investigating the city between us and that way, it'll be a much more reasonable amount of work for you!