Klara has been dead for three months.
That shit dungeon had snatched her up on their way home from school, and the useless TDR hadn't even found half the captives when it swept them all off.
Sara had stayed late to work on her project. She'd never finished that project. She could have gone with Klara. Maybe if there'd been two of them walking home together she wouldn't have been taken. Or maybe they both would have been.