In 2018 she won two World Darts Federation tournaments for girls, namely, the World Masters where she beat Sophie McKinlay by 4–3 in the final in deciding leg, and the German Open where she beat Christina Schuler in the final.

Sheldon played a good match, surpassing her rival in some moments, and had the chance to go 3–1 up.

Sheldon was close to finishing the fourth leg with 107, but missed the double, giving her opponent a chance at 2–2.

[4] 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 fifth round of the singles competition, where she lost to Lorraine Winstanley by 0–4 in legs.