Hermione's first instinct is to retort with something like, 'You should have been more alert in the first place. What if it'd been a Death Eater or something?'

But she quells it.

After all, now is really not the time for things like that.

Instead, she simply blinks at the mushroom, rolls her eyes a little, and lets out a vaguely indignant breath to make up for the lack of rebuke.

"I thought you'd finished your dinner," she says instead, gesturing.