Career
Before joining Chelsea in December 2014, Fahey spent six seasons with Arsenal Ladies. Niamh is the sister of Galway"s 2001 All-Ireland-winning Gaelic football captain Gary Fahey. Fahey began her career with her hometown club, Salthill Devon.
She progressed through the ranks alongside future international team mate Méabh De Búrca.
In the final against Raheny United, Fahey scored the winning penalty and also subdued the attacking threat of Raheny"s Olivia O"Toole, in what RTÉ described as "a splendid individual display." She joined Arsenal Ladies in August 2008. On December 19, 2014, Fahey signed for Chelsea L.F.C. In March 2007, Fahey made her senior debut for Ireland in a 1–1 draw with Portugal in the opening match of the Algarve Cup.
In April 2013 Fahey suffered an anterior cruciate ligament injury while playing for Arsenal. The 30 minutes she played for Ireland against the Basque Country in May 2014 was her first game back.