Demons Everywhere I Look

I had a very specific target in mind. Eirene Jensen-a gorgeous and quite fearless redhead. Exactly my type. But by a stupid coincidence, I ambushed her friend Audrey instead, and by the time I realized my mistake, it was already too late. Now I have to decide what to do with Audrey. In my job, it's not exactly smart to leave the witnesses behind, and to be honest, Audrey really doesn't do it for me.
She is just as attractive as Eirene, but much more scared and starts shaking every time I enter the room. However, I might have to change my mind about her, because the longer Audrey is in my power, the more her fear appeals to me... Dark romance. Morally questionable themes. Explicit scenes and language. Standalone, but part of a duet with recurring characters.