"Maybe," she shrugged, "maybe not. But nobody ever said it had to be you, either."
"The love of the kill is your nature, Damon, and there's nothing wrong with taking in all of what you are. Yeah, they'll look at you badly for it, but the thing is, it's no different than humans eating animals. They have whole slaughterhouses for the ones lower on the foodchain. It's the natural order. Not like we want them to die out or anything, but sometimes it just feels good to...indulge." She tried to ignore the double entendre to that last statement. Katherine stared up at him, a simple, tiny smile on her lips. "Because you weren't always this person, Damon. You were different once. This," she vaguely waved a hand in his direction. "this is my fault. Originally, at least. You never would have been so viscuous if I hadn't..." she let the words fall there. They both knew the past, she didn't need to say it.
Katherine gently twisted out of his grasp, "I'm sorry, I-" as much as it had always been Stefan before, she would be lying to say she never felt anything toward Damon. Her eyes dropped away from him and she wasn't really sure what to say except, "I'm the reason they call you a monster, Damon." but there wasn't a drop of self-pity or a hint that she was looking for sympathy, rather she was just stating a fact.