[3][4] During high school, she moved from Florida to Georgia to play ECNL club soccer for Concorde Fire, which she helped reach the national semifinals in 2017.

[16] Hershfelt played the most minutes of her rookie class (23 starts in 25 appearances) and was named to the NWSL Best XI Second Team after helping the Spirit finish the regular season in second place.

[17][18] On November 16, she scored the tying goal against NJ/NY Gotham FC in the NWSL semifinals, heading in Makenna Morris's free kick in the 90+3rd minute.

[24] Hershfelt made her debut for the United States in a 3–1 friendly victory over Iceland on October 24, 2024, replacing midfielder Sam Coffey in the 72nd minute.

[25][26] A defensive midfielder, Hershfelt is known for her ability to disrupt play with good anticipation, smart positioning to make interceptions, and hard tackling.