[5] In February 2021 she joined Scottish Women's Premier League club Celtic on loan until the end of the 2020–21 season.

[6] FIlbey was part of the Crystal Palace squad that earned promotion to the Women's Super League for the first time, before joining Watford in the summer of 2024.

On 20 September 2018, Filbey received a call up for the Welsh national team,[10] but was later forced to pull out due to injury.

[11] She made her senior international debut for Wales on 8 October 2019, starting a 1–0 UEFA Women's Euro 2021 qualifying away win over Belarus.

[12] Filbey earned a recall to the Wales squad in October 2024,[13] and was involved again in November of that year as the side qualified for their first-ever major tournament.