[1] On the first day of the first leg of the 2022 Artistic Swimming World Series, a virtual event in March hosted by the United States and Canada, Lamothe won the bronze medal in the solo technical routine with a score of 82.0037 points, competing to the music "Cry Me a River" by Michael Bublé.

[2][3] The second and final day of competition, she won a gold medal in the team free routine, helping score 84.7000 points and performing to a theme of "Triumph".

[3][4] At the second leg of the World Series, held at Piscine Georges Vallerey in Paris, France in April, Lamothe won the silver medal in the solo technical routine with a score of 83.3653 points on day two.

[15] In advance of the 2022 World Aquatics Championships in Budapest, Hungary, Lamothe took part in the Canada Artistic Swimming national team training camp in Quebec.

[17] On the first day of competition, 17 June, she ranked tenth in the preliminaries of the solo technical routine and qualified for the final with a score of 83.1821 points.

[18] Choosing to showcase her country with the music choice for her performance, she executed her choreography to fellow Canadian Michael Bublé's song "Cry Me a River".

[20][21][22] In the preliminaries of the team technical routine on the morning of day three, she helped qualify for the final ranking seventh with a score of 84.7752 points.

[30] Lamothe was highlight in a FINA press release as a swimmer to watch at the 2022 World Junior Artistic Swimming Championships, leading up to the start of competition on 23 August in Québec.