Masse followed up her world record by participating in the final of the mixed 4 × 100 m medley with the lead-off backstroke leg of the race. Yuri Kisil anchored the team in the final freestyle leg, pulling the team into a tie for bronze with the Chinese team. She competed in the women's 200 m backstroke setting the Canadian record at 2:05.97 in the semis and qualifying for the final second overall, but was unable to duplicate her time and placed fifth at 2:07.04 ahead of teammate Hilary Caldwell. Following the championships the town of LaSalle, Ontario dedicated an August 18 day to fest her accomplishments and celebrated with her and a town barbecue.