[6] Glenn became a regular for Derbyshire in the Women's Twenty20 Cup over the next few seasons, and was selected for the England Development Programme Under-15s competition in 2015, in which she took 7 wickets in two games, including taking 5/8 against Junior Rubies.

[7][8] After further appearances for Derbyshire and the England Academy, Glenn was selected for the regional team Loughborough Lightning for the 2017 Women's Cricket Super League.

[10] Glenn moved to Worcestershire ahead of the 2018 Women's Twenty20 Cup, taking three wickets in her first tournament with her new side.

[12] 2019 was her breakthrough year, however, as she took 11 wickets at an average of 18.72, with an economy of 6.05: the joint-fifth best return for a spin bowler in the competition.

[5] Glenn played two matches for Central Sparks in the new Rachael Heyhoe Flint Trophy in 2020, taking one wicket.

"[25] Glenn was selected for the 2020 Australia women's Tri-Nation Series in January and February, and took five wickets in three matches, the joint-highest for England.

[29] On 18 June 2020, she was named in a squad of 24 players to begin training ahead of international women's fixtures starting in England following the COVID-19 pandemic.

[36][37] However, she was later released from the squad, allowing her to play in the 2021 Rachael Heyhoe Flint Trophy ahead of England's one-day matches.

[3] She was named in the England squad for the 2024 ICC Women's T20 World Cup[41] and their multi-format tour to South Africa in November 2024.