Despite the fact that she was too young, under Irish Rugby Union rules, to play senior club or inter-provincial rugby, Ireland head coach Adam Griggs fast-tracked Parsons into the
Ireland women's national rugby union squad when she was just 16. When she played as a replacement in the 2018 Autumn Internationals she became Ireland's youngest senior rugby international. She almost scored a try with her first touch in the 19–10 loss to USA and also came off the bench in Ireland's 37–15 loss to England. In January 2019, having turned 17, she was part of Ireland's squad at the Sydney leg of the
World Rugby Sevens Series. She scored a try against Fiji to help Ireland finish fourth. Parsons made her full Ireland XVs debut as a replacement against France in the
2019 Women's Six Nations Championship and was a starter against Wales, when she scored her first try of the competition. In the summer of 2019, she helped Ireland's U-18 Sevens to second place at the World Games in Paris and scored a hat-trick of tries when Connacht beat Munster in the senior interprovincial semi-finals. She started on the wing for Ireland in the
2020 Women's Six Nations Championship, scoring an intercept try against Scotland and another against Wales. She took a break from the remainder of the competition to concentrate on her final secondary school exams (
Leaving Certificate) but when the competition was disrupted by COVID-19, she returned in time to play against Italy in October. Parsons started on the left wing in all of Ireland's
2021 Women's Six Nations games and scored two tries in their 45–0 victory of Wales. She played a role in the Irish women's Sevens team becoming the first ever to win a World Series silver medal in February 2022, in Spain, scoring a try in the final as Ireland led Australia 12–0 before finishing 17–12 behind. She was named in the
Ireland squad for the
2022 Rugby World Cup Sevens – Women's tournament held in Cape Town, South Africa in September 2022. She represented
Ireland at the
2024 Summer Olympics in
Paris. She was named in
Ireland's XVs side for the
2025 Six Nations Championship in March. She was selected in the Irish squad for the
2025 Rugby World Cup in
England. == Personal life ==