The Horse Whisperer (1998) on Netflix

It is a cold winter night. Grace and her best friend Judith go for a ride with their horses, but a terrible accident changes her life forever. A truck hits them, Judith and her horse are killed, while Grace and her horse Pilgrim are seriously injured, both physically and mentally. In an attempt to bring Pilgrim back from his now savage condition, Grace's mother Annie takes them to Montana in search for Tom Booker. Tom is a "horse whisperer", a cowboy with the ability to "communicate" with horses. In the land of the Wild West Annie will change the way she sees life forever, as the wise cowboy slowly heals the souls of Pilgrim and Grace...