2019 (Junior): Was a part of a historic 2019 team which set a school record for victories, finishing the season 19-3 and advancing to the NCAA “Final Four”…appeared in seven games for the Jumbos in her junior campaign...recorded three groundballs in a 21-0 victory over Wellesley on 3/9. 

2018 (Sophomore): Appeared in 13 games and earned three starts in her sophomore campaign...was a part of the 13-5 overall Jumbos and helped the brown and blue defeat FDU-Florham in the First Round of the NCAA Tournament...netted her first career goal against MIT in the Jumbos 21-10 victory...she scored her second goal of the season in a 17-7 win against Endicott...scooped up 10 ground balls on the season and had a season-high three in Tufts 17-4 win over Hamilton.

2017 (Freshman): O'Neil played in eight games and started in three of them in her freshman season..made one assist in the 21-0 win against Castleton on March 22nd..also picked up 13 groundballs and caused six turnovers. 

Before Tufts: Was on the lacrosse, soccer and swimming teams at Concord Carlisle High School...was a four-year varisty starter for the lacrosse team...was a lacrosse team captain in 2016...was on the team that won the Eastern Massachusetts Championship in 2015...was a Second Team Eastern Mass All-Star in 2015 and 2016...was a Dual County League All-Star in 2015 and 2016...honored as an Academic All-American in 2015 and 2016...selected to the ESPN Boston All-State Second Team in 2015...represented Massachusetts and Rhode Island on the First Team at the US National Tournament in 2015...was a captain of the swim team in 2016...member of the National Honor Society in 2015 and 2016.

Personal: Daughter of Robert and Kathi...has two siblings, Brennan (21) and Sadie (18)...father was on the lacrosse team at Bentley University and mother played field hockey at Bentley University.