"Ah." It's not entirely illuminating, as questions go: if she was an adult, John would presume she'd been directed here by City Hall, and it's a little bit harder to imagine a child going to such lengths for information. But it's not impossible to imagine. Honestly, it sounds a little like the sort of thing he might have eventually poked his nose into, if his temporal regression had lasted longer and he hadn't been introduced to the Archive so quickly.

"We do, yes. Immigration files, mostly, on behalf of the city." Her accent could be local, but her behavior decidedly isn't, so he adds, "Did you want to see your file?"