In 2015 Tyrrell first spoke publicly about her teenage struggles with mental health and an eating disorder and how playing sport helped her recovery.

Between 2012 and 2016 Tyrrell attended University College Dublin where she gained a BA in history and geography and is qualified to teach both.

[2][3][4][5] Tyrrell playing as a forward, scored 1–3 and was named player of the match as she helped Round Towers win the 2011 Dublin Ladies Intermediate Championship, defeating Clontarf in the final by 2–8 to 1–9.

[6] In 2006 Tyrrell was the goalkeeper of the Dublin team that won the All-Ireland Under-16 Ladies' Football Championship, defeating Cork by 5–16 to 1–10 in the final.

[7] In 2008 she was a member of the Dublin team that won the All-Ireland Under-18 Ladies' Football Championship, defeating Tyrone by 2–18 to 1–4 in the final.

[8] Tyrrell put in another Player of the Match performance as she helped Dublin win the 2010 All-Ireland Senior B Ladies' Football Championship, defeating Cork by 1–12 to 0–4 in the final.

Other members of the St Catherine's team included Caroline Thorpe, Mary Waldron and Noelle Murray.

She had previously played wing or full-back but Adam Griggs gave her a new role at out-half in which she excelled in the final game of the 2020 Women's Six Nations.

The opening game, against Wales, came a day after she was due to marry her fiancee Sorcha Turnbull but their wedding was postponed because of the Covid-19 pandemic.