Somerville made her debut for the Australian indoor hockey team in 2018, at the Indoor World Cup in Berlin, Germany. At the tournament, Australia finished in 6th place, and Somerville scored once throughout the competition.[7]
Senior
While Somerville has not yet debuted for the Hockeyroos, she is currently a member of the national development squad.[8]
Somerville qualified for the Tokyo 2020 Olympics. She was part of the Hockeyroos Olympics squad. The Hockeyroos lost 1–0 to India in the quarterfinals and therefore were not in medal contention.[9]