[13] Despite spending a majority of the season sidelined due to injury she still won the WNL Young Player of the Year award.

[14] In 2014–15 McCabe scored 23 WNL goals for Raheny, two behind top scorer Áine O'Gorman of UCD Waves.

[19] After struggling with injuries and a lot of first-team playing time in her first year with Arsenal, she joined Glasgow City on loan in August 2017, for the second half of the Scottish Women's Premier League season.

[20] She would help lead Glasgow City to the Scottish title as well as making a handful of appearances in the UEFA Champions League.

[24] Five days later, in one of the last matches of the year, she scored a crucial game-winning goal against Birmingham, keeping Arsenal one point clear on top of the league table.

[26] In December 2020, she made her 100th appearance for Arsenal in a 4-0 victory over Everton, picking up an assist from the corner on a goal by Jen Beattie.

[27][28] Later that month, she was involved in a COVID-19-related controversy after posting a picture of herself on a beach in Dubai despite a travel ban for Tier 4 residents in London.

[35] At the 2014 UEFA Under-19 Championship, McCabe featured as Ireland won their group,[36] before crashing 4–0 to a Vivianne Miedema-inspired Netherlands in the semi-final.

In March 2015 national coach Susan Ronan gave McCabe a senior debut against Hungary at the 2015 Istria Cup, a 1–1 draw.

A quad injury kept McCabe out of Ireland's 3–0 UEFA Euro 2017 qualifying defeat by Spain on 26 November 2015 at Tallaght Stadium, Dublin.

[43][44] McCabe and manager Vera Pauw led Ireland to qualify for the 2023 FIFA World Cup, the first major tournament appearance in the team's history.

[45] On 26 July 2023 she scored an Olympico goal in their group stage match against Canada, becoming her country's first-ever goal-scorer at the Women's World Cup.

[57][58] While playing in the Irish Women's National League, McCabe worked as a grill coordinator at a Nando's restaurant in Tallaght.