Curtin has also played at a semi-professional level for Long Island Fury in the Women's Premier Soccer League and for Fortuna Ålesund in the Norwegian First Division.
Between 2004 and 2008 Curtin attended Hofstra University on a four-year full soccer scholarship where she gained a BA in social sciences.
[13][14] The Curtin sisters helped Lifford Ladies reach the 2003 FAI Women's Cup final which they lost 2–0 to UCD.
[5] Her teammates at Hofstra Pride included fellow Republic of Ireland women's internationals, Diane Caldwell and Edel Malone.
Between 2005 and 2008, while attending Hofstra University, Curtin also played for Long Island Fury in the Women's Premier Soccer League.
[3][21][22][23] Before the establishment of Women's National League, Curtin was playing junior football with Kilmallock United.
In 2010 Curtin helped them reach the FAI Women's Junior Cup final which they lost 1–0 to Bohemians.
[32] She made her debut for the senior team, aged just 16, in a behind closed doors friendly against Arsenal Ladies.
[30][38][39] On 26 September 2010 Curtin scored 2-5 and was named player of the match as she helped Limerick defeat Louth in the 2010 All-Ireland Junior Ladies' Football Championship final.