No, throwing Vampire Lady into a Rank 4 XYZ deck just because isn't a good idea and yes she is better in a Vampire deck but the best thing about Yugioh is making crazy decks that seem like a bad idea and trying to make them work. Besides, Vampire Lady fits thematically with Dark Requiem XYZ Dragon and that is this current deck's boss monster. Of course, I would get laughed out the door of any tournament but I don't need that to be happy.
I posted this dumb ass concept in another website but I don't really care. Sonic x Galerians crossover art idea where: Rion/Lilia are Sonic/Amy, Cain/Rita are Shadow/Rouge, and Ash/Nitro are Silver/Blaze. Almost see the characters fitting if you suspend your belief enough that Galerians/Sonic crossover art isn't that crazy.