The Horse in the Corner is a short story in the Jeff McQuede series by Vickie Britton and Loretta Jackson, who happen to be sisters. I'm not sure of the publication status of the story, but the books in the series (although originally pubbed by someone else, IMS) have been picked up by Thomas & Mercer. And I also read and enjoyed one of the books. And the short story is free, and short, so you won't waste either money or (much) time, but if its possible publication status offends you, skip it...
Kindle US:
https://www.amazon.com/dp/B01JJ0QLPY