[6] The following year, during the 2017 WDF World Cup, again together with Caroline Breen, she won the silver medal in the pairs competition.

In the singles competition, she advanced to the quarter-finals, where she lost to Aileen de Graaf by 1–5 in legs.

[7] In 2018, Byrne achieved the greatest success so far in senior tournaments, winning a silver medal in singles competition during the 2018 WDF Europe Cup.

In March 2022, she played in the Women's Series final, where she lost to Lisa Ashton by 3–5 in legs.

[10] At the end of September 2022, she was selected by the national federation to participate in the 2022 WDF Europe Cup.

On the second day of the tournament, she advanced to the quarter-finals of the singles competition, where she lost to eventual gold medalist Beau Greaves by 2–5 in legs.