From 2014 to 2022, she was a member of the Rachel Homan rink which won the 2017 World Women's Curling Championship and represented Canada at the 2018 Winter Olympics.
It was announced that Courtney would join the Rachel Homan rink for the 2014–15 season, replacing Alison Kreviazuk at second position.
The team nearly missed the playoffs but won their last round-robin game against Tracy Horgan to finish the round robin in 4th place with a 7–4 record.
That season, the team would win one World Curling Tour event, the Pomeroy Inn & Suites Prairie Showdown held in March.
They began the season with a win in the Stu Sells Oakville Tankard, followed by a loss in the first Slam, the 2015 GSOC Tour Challenge against Switzerland's Silvana Tirinzoni.
The team was invited to play in the 2016 Elite 10 men's Grand Slam event, making history in the process.
In playdown play, the rink struggled in the round robin of the 2017 Ontario Scotties Tournament of Hearts, losing two games, and finishing second behind Jacqueline Harrison.
However, they won both their playoff matches, including defeating Harrison in the final, qualifying the team to represent Ontario at that year's Scotties.
At the 2017 world championship in Beijing the Homan rink became only the third in tournament history to go unbeaten in round-robin play, joining fellow Canadian Colleen Jones from 2003 and Sweden's Anette Norberg from 2005.
Courtney and her team won the 2017 Canadian Olympic Curling Trials in her hometown of Ottawa, defeating previously unbeaten Chelsea Carey.
The next month, Courtney won her third Grand Slam of the season, the 2019 Meridian Canadian Open, defeating Silvana Tirinzoni in the final.
A "number of curlers" at the event voted for her to win the tournament's sportsmanship award to protest the fact that the team had two members (herself and Homan) living in Alberta (teams are only allowed one "import" player from out of province, however, Homan maintains a residence in Ontario and is exempted from requirements as she is a full-time student at the University of Alberta).
[13] At the 2019 Players' Championship, the team struggled and ended up missing the playoffs after posting a 2-3 round robin record and losing the tie-breaker to Satsuki Fujisawa.
They missed the playoffs at all four Slams of the season as both the Players' Championship and the Champions Cup were cancelled due to the COVID-19 pandemic.
[14] Team Homan would win the first spot in the 2021 Canadian Olympic Curling Trials by defeating Tracy Fleury in the final of the 2019 Canada Cup.
At the 2020 Scotties Tournament of Hearts they would win their second straight silver medal, losing the final this year to Manitoba's Kerri Einarson.
As the 2020 provincial champions, Homan's team was chosen to represent Ontario at the 2021 Scotties Tournament of Hearts in Calgary.
[17] Up to that point, they had only played in one tour game the entire season in the Okotoks Ladies Classic in November, before that event was cancelled due to a province-wide shutdown in Alberta.
[21] A month later, Courtney was back in the Calgary bubble to compete with Darren Moulding at the 2021 Canadian Mixed Doubles Curling Championship.
Courtney returned to the bubble a third time in April 2021 with Team Homan to play in the two only Grand Slam events of the abbreviated season.
[32] Team Homan had to wait until April 2022 to play in the postponed Ontario Hearts, which they ended up winning, beating Carly Howard in the final.
The pair would go on to represent Canada at the 2017 World Mixed Doubles Curling Championship where they won the silver medal.