Moloney made her international debut for Ireland in 2015 against the England women's national rugby union team at The Stoop in London. Afterwards she was selected to play for Ireland in the 2015 Women's Six Nations Championship. Following this, she led calls for the Women's Six Nations Championship to share stadiums with the men's Six Nations Championship after playing a match against England at Twickenham Stadium. In 2017, she was a part of Ireland's 2017 Women's Rugby World Cup campaign hosted in Ireland. She was a part of promotion for the tournament at University College Dublin, where the group games of the Women's Rugby World Cup were to be held at the UCD Bowl.