Well, he wouldn't kill her or any lady Just Like That.

Not in Luceti, at least - moreso now that he's decided it's probably a better idea and more satisfying to take his time with people. To get to know then, to control them, to creep 'em out. It might not take too much to annoy him, but she'd have to be really sassy, smug, and keep bugging him with it. Or insult Lord Dracula, ff. Some insults and behaviours he can laugh off and other things might end up really striking a nerve. I can't predict what he will and will not jump up at until I see a tag, haha.