It was imperative that she get her nerves completely under control before they entered Level Eleven. Any show of weakness could get her put in the room right next door to Nott's. That was the number one worst-case scenario she was trying to avoid. Even with years of inflicting sadistic torture on countless souls, Hermione wasn't sure that she would be able to withstand it herself. Of course she understood the hypocrisy in that fact. It was best that she just tried to ignore it full stop.