Quigley made only a handful of small appearances after National Velvet, her last being in 1950. At the age of 20, in August 1951, she became a Catholic religious sister, Sister Quentin Rita in the order of the Daughters of Mary and Joseph, teaching at Precious Blood Catholic School. After several years in her convent, she left the vocation and married Dr. Donald Robert Schultz in 1964. The couple had two children, Erik and Marta, before his death in 2012.