The legendary "granny of Mexican cinema" began her movie career when she was a 22-year-old teacher in a nun's school for girls. One day, young Sara's attention was attracted to a small building in downtown Mexico City. Inside it was Azteca Films, one of the very first mexican film production companies, about to produce its first feature: Alma de sacrificio . After that tremendous tour-de-force her entire career, with very few exceptions, was devoted to this kind of roles. She co-starred with almost the entire cast of Mexican movie stars from the 30s to the 70s. Her films are still popular because they're on TV very often.