The upshot of it all was that Professor Umbridge spent her first afternoon as Headmistress running all over the school answering the summonses of the other teachers, none of whom seemed able to rid their rooms of the fireworks without her. When the final bell rang and they were heading back to Slytherin Dungeon with their bags, Hermione saw, with immense satisfaction, a dishevelled and soot-blackened Umbridge tottering sweaty-faced from Professor Flitwick's classroom.