Actually it's a fanfiction based on the TV show The Wild, Wild West, so I won't be looking for a publisher, but will be publishing on line at fanfic.net. I do have a chapter of a story I need to get to working on. It's about a girl who suffers a back injury in a auto accident and can't ride anymore. So with the help of her mother and uncle, she learns how to drive a horse and show in driving classes.
Years ago, I was considering buying a Walking Horse, but although the horse was for sale, the owner apparently wasn't ready to sell. I'd arrange with her to try the horse, but she would 'forget' and not turn up. So I didn't bother asking after the second time. So while I know the history of the breed, I still need information about riding the breed.