The question and that quiet sort of worry made her smile despite herself, and Hermione gave a brief nod that she hoped they thought was to the last question. It wasn't lying if it was a misinterpretation on their parts, was it? She rather thought that if they were going to be risking their lives, the question 'are you alright' should be saved for those days - it was so much easier to answer when there was only physical pain.
To avoid it being asked again, Hermione scanned the room for where the books and their papers had gone but didn't immediately see them. "We can't take a night off," she pointed out. "There are only four more weeks until we're back to Hogwarts, and it won't be nearly as easy then to get out and find them."