She was discouraged by Allen Whipple, the chairman of surgery at Columbia-Presbyterian Medical Center, from continuing her career as a surgeon because he had seen many women attempt to be successful surgeons and ultimately fail. He instead encouraged her to practice anesthesiology because he felt that advancements in anesthesia were needed to further advance surgery and felt that she had the "energy and ability" to make a significant contribution. Deciding to continue her career in anesthesiology, she trained for six months under Ralph Waters at the University of Wisconsin–Madison, where he had established the first anesthesiology department in the United States. In a 1937 photograph of Waters and his residents, she is the only woman among Waters and fifteen other men. She then studied for a further six months under Ernest Rovenstine in New York at Bellevue Hospital. She received a certification as an anesthesiologist in 1937, and returned to P&S in 1938 as director of the newly formed division of anesthesia. She later received a master's degree in public health at Johns Hopkins School of Hygiene and Public Health, graduating in 1959.