"You have to be careful," Hermione said, and then the words were out of her mouth in a rush, fast, desperate: "Please,  please, you must be careful. You can’t give them anything. They’ll use the smallest infraction against you. I can’t—" the words stuck. She unhinged her jaw and tried again. " —I can’t help you much. I’ll do all I can, but there isn’t—" 