"It's what we have to do," Hermione gave the answer before she'd thought about it, and then sighed again - but only for a moment. Then her lips drew into a tight determined line, the look she had when she was writing a particularly hard essay and wanted to finish it in one sitting. It had to be done, and it had to be done quickly, and it had to be perfect. So, it would be.
She looked back up after a moment, though, holding up the file for Susan to see. "You don't mind if I take a few of these with me?"