Taylor Sheridan may have populated 1923 with mega-stars but it wasn’t just Harrison Ford or Helen Mirren who blew away viewers with a stirring performance. For the first time on TV, Sheridan depicted the dark legacy of Catholic boarding schools and how they dehumanized young indigenous women — one of whom is played by the courageous Aminah Nieves. While the Duttons were busy saving the ranch in one part of Montana, Nieves’ Teonna Rainwater was being held prisoner by savage, paddle-swinging nuns in another. Here, the Indiana-born newcomer recalls how hard it was to decide whether to accept such a life-changing role.