We knew from the very first chapter the MC will face escalating troubles. Perhaps this is the first step. Although it's not impossible the new woman would have nothing against him, she might just be initially suspicious and fear he will be a problem, so she'd be here to check him out. She doesn't exactly look like a government agent, plus she's only high school age since she's present as a student. I imagine she's more established, though, regardless of any government connections. She might "just" belong to a (semi-)religious organisation, which would be accepted by the government. If so, she'd be right to be suspicious of a total unknown variable like the MC.