Mills played for the Hightstown Rams in high school, where she was an All-American nominee and an All-State honoree. She also participated in track and field, and was selected as the school's athlete of the year. On the club level, she played for FC Bucks Fury. In college, she played for the Saint Joseph's Hawks from 2015 to 2019. She was included in the Atlantic 10 Conference All-Rookie team as a freshman in 2015. She was selected as an ECAC All-Star and Offensive Player of the Year in 2016, and was included in the NSCAA Mid-Atlantic All-Region second team in 2016. Mills was also named the Atlantic 10 Offensive Player of the Year in 2016, and was included in the Atlantic 10 All-Championship team in 2016, as well as the Atlantic 10 All-Conference first team in 2016 and 2018.Saint Joseph's University Women's Soccer Record Book She holds the school record for most goals in a season (18 in 2016) and most points in a season (tally of goals and assists, 41 in 2016). In total, she made 80 appearances, scoring 39 goals and recording 11 assists, ranking second in school history for goals and points (89).
