She is the fifth head coach in the Royals' program history.

McQuilkin joined the Panthers as an assistant coach in 2017 before being promoted ahead of the fall of 2020. Serving as the recruiting, defensive, and goalie coordinator, she helped top 25 High Point win three straight Big South Tournament Championships and three Big South Regular-Season titles. Additionally, the Panthers have consistently placed defenders and keepers on the All-Big South Team while having players earn Big South Defensive Player of the Year honors in 2018, 2019, and 2021. In 2018, the Defensive Player of the Year was also the program's first All-American in history.

In addition to serving as associate head coach of the Panthers, McQuilkin has been the defensive coordinator for the Uganda Women's National Team since last summer. She also spent time as a head coach for Fusion Lacrosse Club.

As a defender for Towson University, McQuilkin served as team captain in her senior season. The three-year starter was ranked top 10 in career caused turnovers for the Tigers and helped the program's defense rank fourth in the nation for a season allowing just 6.8 goals per game. McQuilkin was also one of 100 DI lacrosse players invited to try out for the U.S. National World Cup team just ahead of her senior season. Following her collegiate career, McQuilkin played three seasons of pro-league lacrosse for the WPLL Brave where she was a key player on the defensive unit and member of the 2019 WPLL Championship Team.

McQuilkin graduated from Towson with a bachelor's degree in business administration and finance. She also has an MBA from the University of Baltimore.