Ella looked at Professor Scabior and frowned a little, concerned. He looked like he was under some serious stress and Ella couldn't help but think it was all his scariness coming back to bite him. Seriously. If he smiled more he'd probably be in a much better state right now. Happy people were just...well happier...and maybe even healthier too. Hm.

Passwords? What did Ella know about passwords? Well most of what she knew had already been said but she figured it was better to answer than not so she raised her hand. "Professor, passwords are used to keep things protected and accessible to only a certain person or group of people." Yes, like the common rooms...