Blouin was an entrant at the 2017 FIS World Championships in Sierra Nevada, Spain. In the final of the slopestyle event she scored a 78.00 holding off silver medalist Zoi Sadowski-Synnott who scored 77.50. She also finished 1st in qualifications and 6th in the final at the Big Air event. Blouin credited the "vibe" and atmosphere of Sierra Nevada for her world championship saying "I was not that stressed because the weather is so incredible here [and] the vibe is so fun. Before I dropped [in] I was super focused and I told myself I was just going to drop [in] and just have fun."