Deep down she knew that he made sense, but knowing it and admitting to it were two different things. Her dander was up and she was going immediately on the defensive.
"Oh, they're part of it," she said, running her hands through her hair. She stopped, just short of pulling out a few strands, instead gripping it on the ends as she tried to hold back tears. "My mum is dead. She's dead because of my family. They're part of this because I've got to worry about them along with Umbridge. And because of them, I've got to worry about what's going to happen to me."
Perhaps this wellspring of emotion wasn't completely to do with Umbridge. Dora couldn't hold back tears anymore and they started rolling down her cheeks. She laid her hands down on top of the bag but didn't immediately move to put anything in.
She didn't speak again until she'd managed to slow her breathing so that she could get a word in edgewise. "I think this is how Sirius must have felt that year," Dora said softly. "I can't do anything about anything and it's driving me crazy. Really, I think." And that was closest she would come to speaking about her depression or the insanity that ran in her family aloud.