Melbourne City, 2019 Mace was drafted by
Sky Blue FC with the second overall pick in the
2019 NWSL College Draft. However, she did not sign with the team and instead joined Australian club
Melbourne City FC on a guest-player contract. In her professional debut, Mace scored twelve minutes after subbing on and helped Melbourne City win 4–0 against the
Newcastle Jets.
FC Rosengård, 2019 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, and would wear the No. 16 jersey. She debuted for the club on March 8, 2019. In June 2019, FC Rosengård announced that they had extended Mace's contract through the rest of the season to November. On October 30, 2019, FC Rosengård won the Damallsvenskan.
North Carolina Courage, 2020–2021 On January 10, 2020, Mace's NWSL rights were traded to the
North Carolina Courage in exchange for
McCall Zerboni. She made her debut in the
2020 NWSL Challenge Cup against
Portland Thorns FC. Mace had an assist to North Carolina's first goal which was scored by
Debinha, and the Courage won the match 2–1.
Kristianstads DFF (loan), 2020 North Carolina loaned Mace to Swedish club
Kristianstads DFF from August 2020 to November 2020. Kristianstads finished the season in third place and qualified for the
UEFA Women's Champions League.
Kansas City Current, 2021–2025 On July 22, 2021, the Courage traded Mace to NWSL club
Kansas City NWSL with teammates
Kristen Hamilton and
Katelyn Rowland, in exchange for
Amy Rodriguez and $60,000 in allocation money. She debuted with Kansas City on July 23, 2021, against her former team in the
North Carolina Courage. The game ended in a scoreless draw. Mace scored 4 goals in 18 league games, starting 17, playing primarily at
left wing in the 2022 season. After finishing fifth in the league, she played the entirety of the playoffs as the renamed Kansas City Current reached the
2022 NWSL Championship, losing 2–0 to the
Portland Thorns. Mace played in 23 regular-season games, starting 15, in the 2025 season, covering both right back and center back. She helped the Current win the
NWSL Shield with the best record in the league, setting multiple NWSL records including most points, most wins, and fewest goals allowed in a season. In the playoffs, the Current were upset 2–1 by
Gotham FC in the quarterfinals. On November 11, 2025, she announced on Instagram that she would not be re-signing with the Current as a free agent.
Orlando Pride, 2026– On December 2, 2025, the
Orlando Pride announced that they had signed Mace to a three-year contract. Mace made her Pride debut on March 15, 2026, earning the start in Orlando's season-opening defeat to the
Seattle Reign. ==International career==