Kammala wannan jumla: A shekara ta 2008, Harmon ta gwada wa tawagar 'yan wasan New Zealand bayan ta koyi cewa ta cancanci saboda an haifi mahaifiyarta a New Zealand. Harmon da tsohuwar abokiyar wasan Stanford Clare Bodensteiner duk an sanya su a cikin ƙungiyar jim kaɗan kafin wasannin Olympics. Harmon ta yi wasan farko na kasa da kasa don Tall Ferns a
Wasannin Olympics na shekara ta 2008.