[1] Originally a swimmer, Morrow was considered to be "only a bit better than mediocre"[2] and soon after turned to diving under the coaching of Irene MacDonald and by 1961 had won diving titles in British Columbia and Pacific North West for her age group.
[3] During the trials for the 1963 Pan American Games, Morrow finished runner-up behind Judy Stewart in the female group.
[4] She achieved a clean sweep of titles in the 1963 British Columbia Championships women's open, with victory scores of 116.27, 110.16 and 58.76 in the 1-metre, 3-metre and tower events respectively.
Her closest opponent was Judy Stewart, who finished in the alternate positions for the respective events.
[7] Morrow is the daughter of a former Olympic swimmer and attended Lester Pearson High School.