Éabha O'Mahony

United States O'Mahony made a big move to the United States, joining Boston College Eagles in the summer of 2021, with coach Jason Lowe expecting her to be popular due to their big Irish fan base. It was important for her to make clear that she would be allowed to travel back to Europe for international duty. She took up the scholarship offer thanks to advice of Ireland team-mate Heather Payne.

During her time in the United States, O'Mahony said she loved the professionalism of the game, including playing with high calibre players, such as Jaelin Howell who plays for the United States national team.

From May to July 2022, O'Mahony played in the USL W League with North Carolina Courage U23.

In December 2022, after two seasons playing for Boston College Eagles, in which she started 33 matches, the Texas Longhorns announced her arrival as a high-profile transfer, alongside Abby Allen and Mia Justus. This move offered her a more competitive program with greater funding. In the 2023 season, she played eight matches, contributing to six shutouts.

Shelbourne After completing her studies in the United States, majoring in psychology, O'Mahony returned to Ireland, signing with Shelbourne in February 2024. Reflecting on her move, she praised the supportive and competitive environment at Shelbourne, noting that the team's ambition to regain the Women's Premier Division title and the loyalty of its fans have driven her to excel. She made her first appearance for the club in May 2024, in a 3–0 victory over DLR Waves and scored her first goal two weeks later against her former club Cork City.

International career O'Mahony was a key player for Ireland's national under-17 team and has captained the team.

In August 2020, O'Mahony was announced as the 2019 Under-17 Women's International Player of the Year.

O'Mahony made her debut for the Ireland's senior national team in August 2019, coming on as a substitute in a friendly match against the United States. She described it as "an indescribable experience getting my first cap on such a great occasion against the world champions."

Style of play O'Mahony is a complete midfielder, having a great passing ability and positional sense knowing where the goal is. She keeps on setting standards for herself as part of a constant bid to improve. For example, she said about the COVID-19 outbreak "I relished the lockdown in a sense because I used it as an opportunity to wind down, train myself and do a SWOT analysis of myself."

Personal life O'Mahony studied in Ireland at Ballincollig Community School and Mount Mercy College in Cork. Afterwards she studied in the United States at Boston College and the University of Texas.