 In her inaugural season of AFLW with the Giants, Tomkins played in all seven matches and ran second in the club's best and fairest Gabrielle Trainor medal with 177 votes, just two behind winner, Victorian priority pick Jessica Dal Pos.Greater Western Sydney signed Tomkins for the 2018 season during the trade period in May 2017.She was delisted by Greater Western Sydney at the end of the 2018 season but redrafted by the Giants with the 63rd overall pick in the 2018 draft.