[5] She also began to bowl more regularly, and was Wales' leading wicket-taker in the Twenty20 Cup, taking 9 wickets at an average of 8.11.
[8] Griffiths also played for Western Storm in their title-winning Women's Cricket Super League season in 2019.
[10][11] She also achieved her List A high score, hitting 80 off 68 balls in a victory over Sunrisers and was voted Supporters' Player of the Year at the end of the season.
[12][13] In December 2020, it was announced that Griffiths was one of the 41 female cricketers that had signed a full-time domestic contract.
[25] In 2024, she played 20 matches for Western Storm, across the Rachael Heyhoe Flint Trophy and the Charlotte Edwards Cup, taking 11 wickets.