It's about going home. It's natural for someone who has experienced something terrible. Not only that, it's hard to believe a victim like her could easily make such a distinction (world vs country), which from her perspective is a semantic one at best.
Your other reason is also possible. But possible and probable are different. Of all the jobs she could take, why that? Of all places she could stay, why there? My point is it feels unnatural.
The author forced the issue just to jam that character back into the story. There is no need for it to be her.