She was part of the Wales side that gained three consecutive promotions in the County Championship between 2008 and 2010, and took her maiden five-wicket haul in 2013, against Devon.
[13] She signed to play for Welsh Fire in The Hundred in 2021, but withdrew as she was due to give birth that summer.
[3][14] In August 2021, Nicholas returned to the Western Storm squad, and played her first match of the season in the Charlotte Edwards Cup against North West Thunder.
[15] She played four matches overall for the side in 2021, taking 3 wickets in the Rachael Heyhoe Flint Trophy and 2 in the Charlotte Edwards Cup.
[20] In 2023, she played five matches for Western Storm, across the Rachael Heyhoe Flint Trophy and the Charlotte Edwards Cup, taking three wickets.