[4] Harvey previously managed the United States women's national under-20 soccer team, Utah Royals FC, Arsenal, and Birmingham City.

[9] She would often attend men's Premier League games with her father where he taught her and her brother to "not just watch the ball, but everything else that's going on.

"[10] Harvey began playing football at a young age on boys teams and in neighborhood pickup games along with Laura Bassett as there was no youth girls league available.

[14][20][21] The Reign faced a tough first half of the season and went 0–9–1 in their first ten games after all three of their American allocated players were unavailable: Hope Solo was out for wrist surgery and recovery, Amy Rodriguez was out for the season due to pregnancy, and Megan Rapinoe was returning mid-season after a six-month stint for Olympique Lyonnais.

[33] On 7 November 2017, the Reign announced that Harvey had stepped down as head coach and general manager, and that the team had hired FC Kansas City coach Vlatko Andonovski, who had defeated Harvey's Reign FC teams in the 2014 and 2015 NWSL championship matches, on her recommendation.

[36] The Royals launched with players primarily sourced from the defunct FC Kansas City, which had spent almost all of the 2017 season out of playoff contention.

The team's struggles continued in Utah during the 2018 season, playing five winless matches before their first victory on 5 May against Washington Spirit.

The team then went on a 5–2–2 run that kept them in contention for the table's fourth-place spot and playoff qualification, then added mid-season reinforcements of Christen Press, Samantha Johnson, and Makenzy Doniak.

[39] While she initially expected to return to Utah for the 2020 season,[40] on 7 January 2020 Royals FC announced that Harvey had accepted an appointment from U.S. Soccer to manage its under-20 women's team.

[44] The Reign also finished atop the West Division of the 2022 NWSL Challenge Cup group stage with an undefeated 4–0–2 record, but fell to Washington Spirit in the playoff semi-finals 8–9 by penalty shoot-out after a scoreless draw.

[45] Harvey also led the Reign to a 2022 The Women's Cup championship, defeating Club América in the semi-finals[46] and hosts Racing Louisville FC in the finals.

She reportedly took on an expanded role with the United States Soccer Federation following her exit from the Seattle Reign FC organization.

[51] From January 2020 to July 2021, Harvey was the head coach of the United States women's national under-20 soccer team; she also served as an assistant coach of the United States women's national soccer team.

[6] Due to the COVID-19 pandemic and subsequently cancelled FIFA U-20 Women's World Cup, Harvey had limited coaching opportunities during this time though credits the experience as a good learning and personal growth period.