Thomas joined the Swans during the 2023-24 campaign from fellow Genero Adran Premier side Aberystwyth Town Women.
The teenager who can play across the frontline was named as Aberystwyth’s young player of the season for the 2022-23 campaign, netting against the Swans that season.
Thomas netted her first goal for the club in the Genero Adran Trophy against Llandudno Ladies, going on to score five goals in that game.