It had happened so long ago vengeance wasn't really an issue here and, while she still hated the Scarlet Witch it wasn't technically this Scarlet Witch that had killed her Dad. That was all way too complicated to think too hard about.
That was a very specific hypothetical and Cassie shot them a questioning look, wondering what the story was behind that, before she gave the question serious thought. She'd pretty much helped save the world from Kang the Conqueror when she was fourteen (and sort of dated him, too). Demon cats were a piece of cake. "Yes. Yes I could."