Emelie Mahdavian’s sweeping documentary BITTERBRUSH follows Hollyn Patterson and Colie Moline, range riders who are spending their last summer herding cattle in remote Idaho. Totally off the grid with only their dogs as companions, Hollyn and Colie brave inclement weather and perilous work conditions while pondering their futures. A portrait of friendship, life transitions, and the work of two skilled young women in the isolated and beautiful landscape of the American West, BITTERBRUSH is an intimate portrayal of a way…