It didn't take much longer for Hermione to figure out which room Capper was in - the only room on the corridor with the door standing ajar. She had the odd idea that she should knock, but it wasn't as if this were Capper's room, and once she'd come in, the glow from the other girl's lumos gave her away easily, though Hermione couldn't see her through something that she was standing on the other side of.
"Capper? Is that you? I've been looking for you." And her voice sounded a bit pinched and annoyed, for it.