Rose was first approached by the Harvard Crimson women's soccer coaching staff in 2018.[3] Rose committed to join Harvard University for the 2021-22 school year, also playing for the women's soccer team.[4][5] She scored her first collegiate goal on September 2, 2021 against the Boston University Terriers.[6] She scored her first game winning goal, in double overtime, on September 15, 2021 against the Northeastern Huskies.[7] After a strong first year with the Crimson, she was named to the All-Ivy First Team and All-East Region First Team,[8] the Top Drawer Soccer First-year Best XI,[9] and was one of only three Ivy Leaguers named to the United Soccer Coaches' 2022 Women's Players to Watch list, as well as the MAC Hermann Trophy Watch List.[10][11]
After her sophomore season, she was named the Ivy League Defensive Player of the Year, as well as an Ivy League First Team All-Star.[12] She was also named to the All-New England First-Team, a United Soccer Coaches Second Team All-American and All-East Region First Team.[13][14][15]
Joining Canada's U20 team again for 2022, Rose was named its captain in advance of the 2022 CONCACAF Women's U-20 Championship.[27] The team finished in third place, in the process qualifying for the 2022 FIFA U-20 Women's World Cup, where Rose also competed.[28] Following the U20 World Cup, Rose was called up to join Canada's senior team for two friendly matches played overseas against Australia.[29] She took the field in the second match on September 6, and earned wide praise for her performance, both for success at frustrating Australian star forward Sam Kerr and for setting up the game-winning goal by Adriana Leon.[30]The Guardian dubbed her "the star of the show."[31]
Rose was named to Canada's squad for the 2023 FIFA Women's World Cup but was forced to withdraw due to injury.[32] In September, she was called up again for the CONCACAF Olympic qualification playoff against Jamaica.[33] With the World Cup having been a disappointment for the Canadian team, coach Bev Priestman opted to reorganize, which included starting Rose in both matches as part of a new defensive configuration. Canada defeated Jamaica to qualify for the 2024 Summer Olympics.[34][35][36] In 2023, she was named Canada's Young Player of the Year for the third time in four years.[37]
Joining the squad for the inaugural edition of the CONCACAF W Gold Cup, Rose played the full 90 minutes in two of Canada's three group stage games, and the full 120 minutes in both the quarter- and semi-finals, which ultimately saw Canada lose to the United States on penalties. Commentary posited that the tournament established Rose as having "seemingly locked in her spot" in the team's starting lineup.[38]