Grave Love by Audrey Rush

Our desire ends in death.
Working at a funeral home provides the perfect opportunity for me to get rid of the evidence. As I’m investigating the property, I find a woman indulging in intimate “self-care” among the dead.
Ren works at the mortuary too. Every day, she buries herself in her self-loathing, using pills to numb her senses. As I stalk her, I learn that more than anything, she wants to be sensually used until that bitter end.
I see her potential: An empty void. A vessel waiting to be filled. A toy for me to break.
We make a deal—I’ll use her to practice my murderous craft, and in return, I’ll help her end it all.
As we near her final days, I realize that torturing Ren with pleasure and pain is the greatest high I’ve ever known.
Then a rival takes matters into his own hands, giving her the ability to finish herself. I won’t let that happen.
I’ll force Ren to realize that not only do I own her final breaths, I own her death too.