Danner is a trainer based at Delaware Park and at Palm Meadows in Boynton Beach, Florida. She galloped horses for 15 years for top trainers including D. Wayne Lukas and Carl Nafzger. Starting in 2011, Danner spent five years working as an assistant to Wayne Catalano, and she became a trainer in 2017. She is the only child of Mark Danner, a trainer since 1991, and Kelly Danner, the longtime Churchill Downs horsemen’s liaison who worked in media relations when Kelsey was young.