The Courtenay, B.C., snowboarder struggled in her first run, earning 30 points. She improved slightly in the second run, receiving 35 points.
American Jamie Anderson won gold with an impressive 95.25 on her second run, just beating Finland's Enni Rukajarvi, who had a 92.50.
Britain's Jenny Jones scored an 87.25.
Jenna Blasman of Kitchener, Ont., was eliminated from competition after finishing 11th in the semifinal at Rosa Khutor Extreme Park.