Mason appeared in all 25 games (18 starts) and provided 4 assists in her freshman season with the
Rutgers Scarlet Knights in 2021. Rutgers went 10–0 in
Big Ten Conference play to claim the program's first conference regular-season title, and they did not concede in the
Big Ten tournament until losing 1–0 to
Michigan in the final. In the
NCAA tournament, she started all five games as the seed Scarlet Knights reached their second-ever national semifinal, where they fell 1–0 to eventual champions
Florida State. Mason scored a career-high 3 goals in 16 starts at center back in her sophomore season in 2022. Though she missed the end of the year with injury, she was named first-team All-Big Ten and third-team All-American by
United Soccer Coaches. In her junior season in 2023, she scored 1 goal in 20 games (17 starts) and played every minute of the conference schedule, earning second-team All-Big Ten honors. She had 2 goals and 2 assists in 21 games in her senior season in 2024, and led the team in minutes played, earning first-team All-Big ten honors. In the
Big Ten tournament, she assisted in a 1–1 draw against
USC and made her penalty in a shootout win to advance to the final, where they lost to
UCLA. ==Club career==