An Irish international, Fahey started her career with her local team before moving to England with Arsenal in 2008 where she enjoyed a domestic treble in her first season.
She would win another three league titles with Arsenal and four FA Women’s Cups before a move to Chelsea in 2015 where she won the double in her first year.
She spent a season in France with Bordeaux before fulfilling a lifelong dream as a childhood Liverpool fan in signing for the Reds in July 2018.
She played both as a defensive midfielder and as a centre-back in her first season, making 17 starts.
In June 2020, Fahey committed her future to the club by signing a new contract.