1. That "armor" is more revealing than w/e she wore before. And also -- that dog collar... BOY, what is that? That's some weird fetish insert right there..
2. "Let's find a place where we can live in peace", she says, leaving a a town where everyone welcomes and cares for her and Teto greatly.
Wut?
She obviously can't just stay in one place in this kinda story, it'd be boring. But that's not really a reason.