Narcissa laughed despite herself at Ella's sarcasm, though Vera's comment worried her a bit. In context, it could have also been sarcasm, but Vera was much less prone to that sort of thing than her sister. She gave her a curious look, but decided not to ask.
"I hope there's no impending Acromantula rebellion," she said with a little shiver, but she was smiling. "Or rats, for that matter. I'm glad to hear you two have got both of those handled, on top of all your schoolwork."