Zach was pretty good at taking care of himself. And even if there was someone else to take care of things, it didn't make sense to be unable to take care of himself, to be dependent. That was why he hadn't taken a personal servant before Ernie.
Laughter had been in his throat until the comment about Ernie's family's house elf. That was too bad. "My family has one," Zach replied, "But I'm getting a flat in London for the hols. Starting to get ready for after graduation. And hey, no parents is a plus." He paused, "Sorry about your elf."