Kelsey played with Sligo Rovers' U17 team in 2018 and in 2019 she joined Galway WFC's senior WNL squad. She played there for two seasons, leaving at the end of the 2020 season to join Athlone Town.
In January 2021, Kelsey signed for Athlone and she made her league bow for the club on the opening day of the season, coming on as a substitute in a 2-0 defeat to Shelbourne. Her first start came against Peamount six weeks later and she racked up 17 league appearances that year.
In 2022 she missed only 3 games, making 28 appearances and scoring twice, as part of the team that finished runners-up in both the League and the FAIW Cup. The following year Kelsey made just 2 appearances for Athlone, both as substitute and in Januaray 2024 she signed for Sligo Rovers.
Kelsey played 20 times for Sligo in 2024 and scored once, in an FAIW Cup quarter-final win against DLR Waves.
| Competition | Apps | Subs | 🟨 | 🟥 | Mins | |
|---|---|---|---|---|---|---|
| AI Cup | 3 | 0 | 0 | 0 | 0 | 202 |
| WU19 Champ | 1 | 0 | 0 | 0 | 0 | 90 |
| WFAI Cup | 7 | 3 | 1 | 0 | 0 | 483 |
| WNL | 58 | 37 | 2 | 0 | 0 | 3641 |
| WPres | 0 | 1 | 0 | 0 | 0 | 0 |
| WNL U17 | 3 | 0 | 0 | 0 | 0 | 360 |
| WNL U19 League | 2 | 1 | 0 | 1 | 0 | 180 |
| Career Total | 74 | 42 | 3 | 1 | 0 | 4956 |
| Season | Competition | Team | Apps | 🟨 | 🟥 | |
|---|---|---|---|---|---|---|
| 2024 | AI Cup | Sligo Rovers WFC | 3 | 0 | 0 | 0 |
| 2024 | WFAI Cup | Sligo Rovers WFC | 3 | 1 | 0 | 0 |
| 2024 | WNL | Sligo Rovers WFC | 16 | 0 | 0 | 0 |
| 2023 | WNL | Athlone Town WFC | 1 | 0 | 0 | 0 |
| 2023 | WPres | Athlone Town WFC | 0 | 0 | 0 | 0 |
| 2023 | WNL U19 League | Athlone Town WU19 | 2 | 0 | 1 | 0 |
| 2022 | WFAI Cup | Athlone Town WFC | 4 | 0 | 0 | 0 |
| 2022 | WNL | Athlone Town WFC | 24 | 2 | 0 | 0 |
| 2021 | WNL | Athlone Town WFC | 16 | 0 | 0 | 0 |
| 2020 | WFAI Cup | Galway WFC | 0 | 0 | 0 | 0 |
| 2020 | WNL | Galway WFC | 1 | 0 | 0 | 0 |
| 2019 | WU19 Champ | Republic of Ireland U19 W | 1 | 0 | 0 | 0 |
| 2019 | WFAI Cup | Galway WFC | 0 | 0 | 0 | 0 |
| 2018 | WNL U17 | Sligo Rovers WU17 | 3 | 0 | 0 | 0 |
