[The sigh is worrying. It sounds like Finn is trying to collect himself, or figure out what he wants to say...what was bothering him?

And then he starts talking about moving and leaving the city.]

What? Finn, no. We can't leave. You don't want to go beyond that wall, there isn't anything there!

[Just lots of rubble and things that she didn't want to get too close to.]

What's going on? Why are you upset?