To my eternal chagrin, when Umbridge got her chance at Dumbledore, I was a factor working in her favour. A few weeks later, we were in a meeting of the DA, working on Patronus Charms (I, if I may say so, was one of the few who got it right; it's fiendishly difficult even without a Dementor or boggart-playing-at-Dementors to practice on) when Dobby came running in, dreadfully upset. We'd been shopped, and Umbridge was on the way! If only Dobby hadn't been trying so hard to override that programming that forced him to punish himself, we'd have had a few more minutes to evacuate the Room of Requirement. There was a dreadful scrum at the door, and while I got away, Harry was nabbed.