DeMille and MacPherson formed what became one of the most influential and long-lasting partnerships in the industry. She penned 30 of DeMille's next 34 films. Some of their most notable works are "Rose of the Rancho" (1914) with Bessie Barriscale, "The Girl of the Golden West" with Mabel Van Buren, "The Cheat" (1915) with Sessue Hayakawa, "The Golden Chance" (1915) with Wallace Reid, "Joan the Woman" (1916) with Geraldine Farrar, "A Romance of the Redwoods" (1917) with Mary Pickford, "The Little American" again with Pickford, and "The Woman God Forgot" (1917) again with Farrar.