In April 2019, Kelly joined West Coast as an international rookie together with her sister Niamh Kelly.[2][3][4][5] She became a part of West Coast's inaugural AFL Women's team when she debuted in round 1, 2020 against Collingwood. After suffering a knee injury against Gold Coast in 2020, Kelly's debut year was cut short.[6] She played as a forward in her earlier years of Australian football, and became West Coast's second leading goalkicker in the AFL Women's in 2021.
In June 2022, Kelly was traded to St Kilda.[7] She missed her first season at the Saints due to an ongoing injury, but returned to play all 21 games across the 2023 and 2024 seasons. Kelly had a career-best game when she played against her sister for the first time at Norwood Oval, recording 21 disposals and five tackles.[8]
Following an unsuccessful 2024 season for St Kilda, Kelly was traded to Adelaide, where she would be reunited with her sister Niamh.[8]