Mace played college soccer for the UCLA Bruins, where she helped reach the national title game and was named first-team All-American in 2017.

[3][4] Mace lacked recruitment offers during high school, and drew the attention of the University of California, Los Angeles (UCLA) only after her mother created and sent a highlight tape for them.

The tape impressed UCLA coach Amanda Cromwell, who traveled to a tournament in San Diego, California, to scout Mace in person.

[7][8] In her professional debut, Mace scored twelve minutes after subbing on and helped Melbourne City win 4–0 against the Newcastle Jets.

[9][10] In February 2019, Mace signed a contract with Swedish club FC Rosengård of the Damallsvenskan for the summer with an option to extend to November,[11] and would wear the No.

[16] On January 10, 2020, Mace's NWSL rights were traded to the North Carolina Courage in exchange for McCall Zerboni.

[23] The renamed Kansas City Current announced on December 19, 2022, that the club had signed Mace to a three-year contract.

[25] In February 2018, Mace received her first call-up to the United States women's national team ahead of the 2018 SheBelieves Cup but did not play.

[35] During the September 2022 FIFA international window, Mace was called up to replace the injured Kelley O'Hara during two friendlies against Nigeria.