Florida State Seminoles Justus spent two years as the understudy to
Cristina Roque for the
Florida State Seminoles. She kept five clean sheets in her eight starts in the 2021 season, being named to the
Atlantic Coast Conference all-freshman team. She was an unused substitute as Florida State won the
ACC and
national championships with Roque in goal. She kept four shutouts in six starts as a sophomore in 2022, helping the team win the ACC regular-season title. Roque played as the Seminoles won another
ACC tournament and reached the
NCAA semifinals. After the season, she transferred to the
Texas Longhorns to get more playing time.
Texas Longhorns Justus started every game for the Longhorns in her junior season in 2023, being named second-team All-Big 12 with 9 shutouts in 26 games. She led the team to the
Big 12 championship as the tournament's most valuable player. Texas reached the third round of the
NCAA tournament, where they fell to Florida State. With the program's move to the
Southeastern Conference in 2024, Justus kept a program-record 12 clean sheets and was named to the All-SEC third team. She led the Longhorns to the
SEC championship as the tournament's most valuable player, posting a career-high 14 saves in a 2–1 win against
Arkansas in the semifinals. ==Club career==