[The fact that Rose isn't readily jumping to her death says something. That maybe she's at least willing to talk. Rey's reflexes are quick enough that she should be able to react in time, in case that situation decides to change anytime soon.]

Think the concept is too broad to be summed up in one sentence. Monsters can be the things that haunt the tunnels here, or they can be people. Come from a place where they can also be machines.

[Rey considers herself to be among them. Something unnatural and not fit to live. But that isn't her choice to make anymore.]