Bless Me Father

So I've been grappling with this short story idea for a while. It started out as a joke of sorts, when I was having dinner with my friend Big Dave and I made a comment to the effect of "a hitman and a priest walk into a bar." Took us about 5 seconds before we realized that that would make a great story, possibly even a good script for a short film.
I started playing around with the idea, and settled on a hitman coming into a Catholic church to give confession. Then the hitman got a sex change because I figured female contract killers deserved their due—I'm pretty sure they do exist, but they're probably just as discreet as their male counterparts. Next was the idea that she's not just there to give confession; the phrase "Your turn, Father" got stuck in my head and I began wondering whether the priest was just another contract or something more personal for her.
Now I wish I had more to go on than this:

"Bless me Father, for I have sinned. My name is Corinne Renaud, and it has been twelve years since my last confession. In that time, I have turned my back on God and His commandments, and I have killed. Men, women, rich, poor, the criminal and the clean-living alike. 127 lives have ended because of me, and tonight I wish to end this long and bloody run."
Corinne heaved a sigh of relief and fingered her rosary beads for a moment. She closed her eyes and straightened her posture, and as she rose, she couldn't help but smile evilly as the words came out:
"Your turn, Father."