At age 9, Sara entered the prestigious Las Vizcaínas school as an intern. In 1905 a typhus epidemic invaded Mexico, Sara became infected and infected her mother Felipa, who died. She remained under the charge of the director of the institution, Cecilia Mallet, and her good behavior and excellent grades allowed García to stayed in school. The director of Las Vizcaínas noticed her great sensitivity and artistic inclination and directed her into painting. She also became a teacher and during her class she used to make her students performed plays.