"It's just... oh, it's nothing." Hermione shrugged and looked down at the pitiful concoction she'd been trying to make for breakfast. Or a semblance of breakfast.
Much more interested in what Harry had to say, her attention was quickly grabbed by Harry's explanation of Ginny's state. Hermione's lips pressed together, the way they sometimes did when she was deep in thought, and she shook her head. "I don't know. It has to be something like that. It almost sounds like the Imperius curse, but... neither one of those... I haven't ever read them having been done on an entire population, Harry." But there was no other real explanation, unless everyone had just turned against their cause that quickly - but it had been years.