[3] She began her senior career as a skip in the 2011–12 season, and played in her first Grand Slam, the 2011 Manitoba Lotteries Women's Curling Classic.
[4] She competed in the 2017 Road to the Roar Canadian Olympic Curling Pre-Trials with Breanne Knapp, Janelle Vachon, and Sarah Neufeld, but the team missed out on a chance to qualify for the trials following losses to Julie Tippin and Krista McCarville.
[6] They began the season by winning three straight World Curling Tour events in three weeks: the 2018 Stu Sells Oakville Tankard, the inaugural Morris SunSpiel and then the Mother Club Fall Curling Classic[7] with a fourth win at the Curlers Corner Autumn Gold Classic in October.
Their strong play during the early part of the season earned them enough points to put team Einarson in the Wild Card game at the 2019 Scotties Tournament of Hearts.
The team would rebound to have a strong finish at the end of the season, winning the 2019 Players' Championship and losing in the final of the 2019 Champions Cup.
[9] The team was set to represent Canada at the 2020 World Women's Curling Championship before the event got cancelled due to the COVID-19 pandemic.
[14] A month later, Harris was back in the Calgary bubble to compete with Mark Nichols at the 2021 Canadian Mixed Doubles Curling Championship.
Harris returned to the bubble for a third time in April 2021, along with her women's team to play in the two only Grand Slam events of the abbreviated season.
Through the round robin, the defending Scotties champions posted a perfect 8–0 record, earning a spot in the playoffs.
They then lost in the seeding round to New Brunswick's Andrea Crawford, meaning they would have to win three straight games to defend their championship title.
[28] Team Einarson was chosen to represent Canada at the 2022 Pan Continental Curling Championships where they qualified for the playoffs as the second seeds with a 7–1 record.
[31] In December, they travelled to Japan to compete in the 2022 Karuizawa International Curling Championships where they lost in the final to Kim Eun-jung.
[34] They then won both the 3 vs. 4 game and the semifinal over Nova Scotia and Northern Ontario respectively to reach another national final where they again faced Jones.
[40] Team Einarson reached the quarterfinals in their first event of the 2023–24 season, falling to Serena Gray-Withers at the 2023 Saville Shootout.
They had three semifinal finishes and one quarterfinal appearance before missing the playoffs at the 2024 Players' Championship, breaking their streak of qualifying at the previous twelve Slams.
Once there, however, they lost both their games to Team Homan and Manitoba's Kate Cameron, eliminating them from contention and ending their chance of a record setting fifth straight Scotties title.
[44] Following the event, in March, it was revealed that Harris had been provisionally suspended for up to four years for testing positive for Ligandrol, a banned substance.
Harris claimed she was unknowingly exposed to the substance, and planned to appeal the decision to the Court of Arbitration for Sport.
[45] On January 14, 2025, the Court of Arbitration for Sport decided that Harris was eligible to return to competition, stating that "she bears no fault or negligence for the violation and 'no period of ineligibility' is imposed".