[3][4] Lehane made her international boxing debut for Ireland at the Nicolae Linca Golden Belt tournament in Romania in April 2022, taking home a bronze medal.
[5] Having achieved her degree, Lehane worked for a year in a primary school before putting teaching on hold to focus full-time on boxing.
[3] At the 2023 European Games in Poland she lost in the quarter-finals via split decision to eventual gold medalist Stanimira Petrova from Bulgaria.
[4][6] Lehane lost in her first contest at the World Boxing Olympic Qualification Tournament 1 in Italy in March 2024, going down on a split decision against French boxer Romane Moulai.
[11][12] She was given a bye into the second round[13] where she lost by unanimous decision to 2018 Asian Games gold medalist Chang Yuan from China.