I would sit there and listen to her comments, but I see where she is going with all of this. As she finishes, I look up at her, "I am afraid it is too late to leave you alive, Jackie," I would proclaim as I sat forward, as you would look over my body, any sign of arousal or pleasure in this situation completely gone at this point, "No, I can't. I know what happens if I just let you go. You go to the police, or even better, you come after me yourself. I can't allow you to just go. Death is the only way you will leave here. But, I am not cruel..."
I smirk at the thought for a moment as I lay back, I am not cruel, I think to myself, yet I am punishing her to death and now making her think about it.
"You are not leaving, I am sorry," I would say again with a genuine sadness on my face, "While your option would be more pleasurable to me, after all this, seeing me, me explaining myself... Nothing about that turns out well for me. So, you can choose what I told you could choose. Or you die."