She was telling him what to do. The little bitch he'd wanted to kill for so many centuries was acutally trying to tell him what to do. Oh he should have left her to die. But he knew, on some level he didn't want to think about that her words had merit. He should think about this world and how he fit in it. About the powers of various others. Not working against them. But he had to preempt trechary. And it would happen, it always happened. The proof was right here before him.
And as she dropped to the floor, there it was. Begging for her life. And god he'd never tire of how that sounded.
He stepped a little closer, walking around her, circling her as he spoke. "Anything, well, I could compell you for anything but its much more amusing if you do it willingly, isn't it. Couple of things then. No vervain from you. Not ever. I don't know when I might need to ensure your loyalty. Two. Elijah seems to think you love him. I'm telling you right now, that you don't. And you will tell him as much. Break his heart. Do you understand? He could do better in his life than someone like you. Oh, and finally, any attempts by any of them to get to me, to kill or contain me. You will tell me before they do anything. I'll want all the details. If you ever lie to me, if you ever think that you can escape my wrath. I want you to remember how you feel right now and wonder if the gain is really ever going to be worth it."
He crouched down by her side, grabbing her face with a hand and searching her eyes for an answer. "Agree Katerina and you'll walk out of here."