The Ministry had started investigating Hogwarts and tried to unsubtly keep an eye on Dumbledore. And their pink watchdog was a menace. Dolores Umbridge had irked Hermione the moment she had disturbed the welcoming feast with her high-pitched giggle and it had only gotten worse when she had insisted that Defence against the Dark Arts was merely a theoretical class and that they wouldn’t need to ever actually use defensive spells, because there was nothing to defend against.