Midnight is a famous Foundation Horse, born in 1916, and part of Peter McCue's family tree. Midnight passed blazing speed onto his children, and at one point in his own career, he was so successful that he had no challengers!! Hailee is one of his children, which accounts for her quickness and adept agility! She has multiple lines of Midnight, through her Mary D, Camelots Honesty, Lady Heart, Midnight Lassie, and Miss Night Bar lines. So, she has Midnight on both her sire and dam's side. You can read more about this flea-bitten, but fast grey at the following link:
http://cloughrinka.tripod.com/id8.html