Amy Long has held the head coach title at Saint Mary's since the start of the program in 2014.

The 2018 campaign saw the Belles set a new program record for wins in a season with 12. Additionally, Saint Mary's won their first postseason game in program history as the team made their first appearance in the MIAA Championship contest. The program yielded the MIAA Rookie of the Year for the second consecutive season as Four Belles were named All-MIAA. Erin Doyle earned the program's first All-Region honoree. Academically, three members of the team were IWLCA Academic Honor Roll honorees while the Belles earned both the IWLCA Academic Honor Squad status and the MIAA Team GPA Award for the 2017-18 academic year.

In 2019, the Belles went 8-0 in MIAA play to capture the program's first conference title. The team had a program-record six All-MIAA performers as Doyle was named the MIAA Offensive Most Valuable Player while classmate Emily Kraker was tabbed as the MIAA Defensive Most Valuable Player. Saint Mary's then had a program-best three players garner All-Region honors as Erin Doyle, Kate Kelly, and Rachael Leonard were all named to the Great Lakes Region Second Team by the IWLCA. The Belles again earned both the IWLCA Academic Honor Squad status and the MIAA Team GPA Award for the 2018-19 academic year.

Long came to Saint Marys with a range of coaching and educational experience. She served as the head coach of the Sylvania High School Girls Lacrosse team and has held assistant coaching positions with the University of Toledo and Siena Heights University lacrosse programs. A Level 1 and Level 2 trainer with the U.S. Lacrosse Coaching Education Program, she teaches lacrosse coaches about the game during their certification process. Additionally, she is a U.S. Lacrosse level 3 certified, which is the top certification offered by the governing body. She has also taught undergraduate students the skills and strategies of the game of lacrosse at the University of Toledo.

Long is a 2009 graduate of the University of Toledo. She was a double major in marketing and professional sales and graduated cum laude with a bachelor of business administration. In August 2012, she completed her master of arts degree with a concentration in organizational leadership from Siena Heights University. Long completed a master in business administration at Saint Xavier in 2016.