She was announced as the second head coach in program history on June 28, 2019.

Miller most recently served as Head Coach of the Harvard Women's Lacrosse program from 2007 to 2018. Prior to Harvard, Miller was the Head Coach of the startup Syracuse women's program (1996-2007).

She has posted a 191-139 career coaching record (.579) in 21 seasons as an NCAA head coach. She guided the Crimson to 85 wins in 11 seasons at Harvard and led the team to an appearance in the Ivy League Championship Game in 2011. While at Syracuse, she led the Orange to six NCAA tournament appearances, including a berth in the 2007 Elite Eight. Miller, who was the 2007 Big East Coach of the Year, posted a 106-52 record (.671) in 10 seasons with the Orange.

Miller was named the Canadian National Team head coach in January of 2007 after serving as an assistant coach for the Canadian team in 2000-01. She began a term as a member of the NCAA Women's Lacrosse Committee in September of 2007 and has previously served on the Tewaaraton Trophy Selection Committee (2004-06) and as chair of the All-America Committee (1995-98).

Prior to taking over at Syracuse, Miller got her first taste of the Ivy League as an assistant coach at Brown from 1994-96. Following her third and final season, in which she helped Brown go 15-4 and reach No. 15 in the national rankings, Miller left to start the Syracuse program.

Miller began her coaching career here in Massachusetts. She served first as an assistant coach, then as associate head coach at Wheaton from 1991-94 after getting her start as head coach of girls' lacrosse and field hockey at Thayer Academy in Braintree in 1988-89.