[ For that answer Hilda is practically ready to give some sass in return. It doesn't quite matter to her that Diluc is a teacher and that giving him any amount of sass could very well result in a punishment of some sort that could be made worse due to the fact that he's a vampire - but self-preservation since arriving here hasn't been something Hilda seems to particularly care about.

Instead she's taken by surprise by both his silent peace offering and by what he says. ]

What is that supposed to mean? I don't know if you were watching the same thing I was but I definitely wouldn't have caught myself even without the vines.