Prior to Stanford
- Played for Dexter Southfield in the Independent School League
- Team competed in the Girls High School National Championship invite on two occasions
- Named an Under Armour All-American (2022)
- Represented team MA/RI at the USA Lacrosse Women's National Tournament, winning the tournament championship (2022)
- American Selects (2022)
- Two-time High School Nationals participant (2021-22)
- Two-time All-NEPSAC (2021-22).
Personal
- Parents are Kieran and Catherine Brosnan
- Has two siblings, Myles and Grace
- Interested in studying architectural design
- Hobbies include volunteering for Harlem Lacrosse, volunteering for you lacrosse, going to the beach, walking her dog, traveling, and spending time with family
- Also played varsity field hockey in high school