Fallout: Equestria - Better Days is written by Gamma Deekay in collaboration with Digital Ink (a.k.a. Sawyer) who writes its sister-story The Long Winter. The events of Better Days happen after the events of The Long Winter, set stands alone as it's own story. It can be read on fimfiction.
It takes a lot of hard work to be a bounty hunter in the wastelands of Equestria, and no pony know's that quite as well as Percussion Cap. She may not be the best, or work the fastest, or even be the most social towards others, but she always gets the job done. Who needs friends anyway when you have the job to focus on? The job has always been the same for her, track 'em, kill 'em, snip 'em, and return 'em. But sometimes you have to take jobs that you don't feel comfortable with, ones that are just too good to turn down. Sometimes you just have to risk it all for the big payout. And sometimes, you don't end up winning anything at all.