@natque02 Thank you so much!
I was going back and forth on the end for a while. There is a draft somewhere of an alternate ending where when she pulls the trigger, it kills him - but it didn't feel right. As much as I wanted the world rid of his evil and as satisfying as those two seconds felt, she wouldn't have been able to move on from being the one to end it. I couldn't move the plot forward from that point at all, so I had to rewrite it. I went through a few different versions - even one where Johnny stepped in for her! - before I settled on this one.
To me it felt bittersweet, not quite satisfying - like a pause, waiting for something else to happen. Waiting for me to flesh out the sequel, I guess! The good news is, I have a true ending in mind. It's possibly going to take a while to get the ball rolling there, I have been working a lot and I'm still struggling with cover and title ideas, but there is finally a coherent plot idea for the sequel!