[2] During her career, she was considered one of the top four cancer surgeons in North America, and she earned many firsts and fellowships in her field.
[3] She also served as president of the medical women's organization for undergraduates, participated in sports such as tennis and hockey, and won a scholarship for "all-round competence".
[2] Gray returned to work with another year-long internship, this time at St Mary's Hospital in Manchester, England.
[2] Beginning in 1941, Gray taught as a clinical teacher of surgery at her alma mater, the University of Toronto, in its faculty of medicine.
[4] After her retirement, she continued her involvement in science, becoming a fellow and member of several more organizations Gray's obituary in the Canadian Medical Association Journal describes her as "dynamic, cheerful, and forthright with a great sense of realism and self-discipline", and states that these attributes helped her cope with a long illness that eventually led to her death on October 16, 1978, at the Women's College Hospital.