Hasibe rises to collect her coat, obliging. She understands he's uncomfortable, now, and she's hoping that whatever instincts he's fighting don't drive him to lose control with her--that's not something she always minds, per se (far from it), but she hasn't told him the nature of her physiology.

"Come on, then. I know a place we can go."

They will have to break into it, but Hasibe doesn't totally parse 'trespassing laws' as applying to her. She loves the night too much to listen to rules about what parts of it she can't have. Even the tunnels to the surface will be a change in atmosphere for Mitchell.