[1] During the 2017–18 season, while still competing at the pre-novice level as a singles skater, she formed a pairs skating partnership with James Robart-Morgan.

Pereira moved up to the junior level, with her most notable competition being a virtual Skate Canada Challenge, where she won the bronze medal.

After finishing tenth overall, she called it "an amazing experience," adding "I learned a lot more about myself about how to handle the pressure of an event like this.

[12] She achieved personal best scores in the short program and overall at the World Junior Championships, where she finished fourteenth overall despite being twelfth and thirteen in the two segments.

[14] Returning as well to the Junior Grand Prix, she finished sixth at the 2022 JGP France in Courchevel, setting a new personal best score in the free skate in the process.

[16] In the midst of her singles career, Pereira also received an opportunity to return to pairs skating, opting to form a partnership with three-time national silver medallist Trennt Michaud following the retirement of his previous partner Evelyn Walsh.

"[19] Pereira finished eighth in the senior's women event at Challenge, qualifying to the national championships in two disciplines.

Fourth after the short program, they rose to third place in the free skate, winning the bronze medal and securing the international minimum scores to compete at future ISU championships.

[20] Due to the scheduling of the 2023 Canadian Championships, Pereira was required to compete two short programs and two free skates on consecutive days.

[25] Concluding their season at the 2023 World Championships in Saitama, Pereira/Michaud ranked sixth overall, including a notable fourth-place finish in the free skate segment of the competition.

[31] At their second assignment, the 2023 Grand Prix de France, Pereira/Michaud skated a clean short program with a new personal best score of 65.97, coming 0.66 ahead of the pre-event favourites, reigning European champions Conti/Macii of Italy.

[32] In the free skate, Michaud fell on the end of his jump combination and stepped out of his triple Salchow, but the team still set another personal best to win that segment as well, taking their first Grand Prix gold medal.

[34] Following the conclusion of the Grand Prix series, Pereira and Michaud opted to revise their "River" short program to a softer version with different choreography, based on feedback from judges and other coaches.

[36] At the 2024 World Championships, held on home ice in Montreal, Pereira/Michaud placed ninth in the short program, having skated cleanly but receiving only a level 1 on the triple twist.

[41] At their second assignment, the 2024 Cup of China, they fared better, placing third in both segments (including a new personal best in the short program) and winning the bronze medal.

They were third in the free skate as well, being overtaken by their Canadian teammates but themselves surpassing the Americans, and won the bronze medal with a new personal best score of 198.40.