"I'll grant you that," Z said. "Slytherin does have a reputation. But it's well-earned. Now I'm going to suspicious of any and all Hufflepuffs, especially Ministry bureaucrats. Remember all of those stories about what's-her-name, that Ministry bint, Umbright? Umbridge? Something like that."
Z added a bit of extra polish, the broom she was working on was in terrible shape. Why on earth weren't the school brooms in better shape? They could have students in detention service them or something, these were a disgrace and probably sort of dangerous. Greta would know better. Speaking of danger-
"Greta, there are a few brooms I've come across that are awful shape, the handle's cracking or something seemed off with the balance. I've put them out of the way in the locker figuring someone could take a look at them eventually."