Mancuso returned to competition in December 2017, failing to finish a World Cup super-G in St. Moritz. She made two more appearances at the super-G races in Val-d'Isère a week later, however she could only manage a best finish of 42nd place. The following month, she announced her retirement from competition, making her final appearance in a downhill at Cortina d'Ampezzo - the venue where she had taken her first World Cup podium - whilst wearing a Wonder Woman outfit and a cape.
