[7] In 2020, Slater was named in the Northern Diamonds squad for the Rachael Heyhoe Flint Trophy, but did not play a match.
[8] In 2021, she was added to the Northern Superchargers squad for The Hundred as an injury replacement player, and appeared in one match, against Southern Brave.
[9][10] She was also retained in the Northern Diamonds squad for the 2021 season, and made her debut for the side on 28 August 2021, in a Charlotte Edwards Cup match against Western Storm, taking 2/16.
[15] She played eight matches for Northern Diamonds in 2022, across the Charlotte Edwards Cup and the Rachael Heyhoe Flint Trophy, taking three wickets.
[19] In 2024, she played 17 matches for Northern Diamonds, across the Rachael Heyhoe Flint Trophy and the Charlotte Edwards Cup, taking 18 wickets.