Mewis signed with the Australian W-League team Canberra United FC to finish the final two weeks of the 2012–13 season.[4][5][6][7] She made her first appearance for the club during a 5–0 win against the Western Sydney Wanderers FC on January 8 and scored the team's fifth goal in the 89th minute of the match.[8][9] Her second and final appearance occurred on January 12 when the team was defeated 5–1 by eventual regular season champions, Brisbane Roar FC. Mewis scored Canberra's only goal of the match in the 45th minute.[10] Canberra United finished fifth during the regular season with a 5–3–4 record.[11]