Imagine keeping a BIG horse of that caliber (appears to be Friesian) in a cramped maybe 8x8 stall where the glass bulb stall light (another no-no) is at eartip level. Imagine such poor camera work showing one white hind sock in one shot (and minimal leg feather all around) and no white sox and full leg feather right after that. Imagine mindless teen girl with gratingly embarrassing "acting" skills crouched at her horse's feet examining something in the dirt (and why doesn't that stall have actual straw or wood shavings or peat bedding instead of dirt?). Did central casting pull this girl actor out of Rodeo 100 Beginners for her (non-existent) riding "skills"? Did anyone bother to ask an actual equine expert if horses sometimes freak out at trees waving in the breeze? (Yes they do and it's not because there's a real demon spirit and btw trees aren't demonic even in the overly fevered imagination of Eli Roth.) For heaven's sake if you want to make a movie featuring a horse - and, Eli, perhaps consider a career change - at least consult someone who knows SOMETHING about horses!