In the 2011–12 season, Osmond competed on the senior level for the first time at the Canadian Championships. She was first after the short program, ahead of the defending champion Cynthia Phaneuf and the 2011 bronze medalist Amelie Lacoste. Osmond won the bronze medal overall. At the 2012 World Junior Championships, Osmond won the preliminary round. She finished 10th overall.