 She played as Charlton lost the 2004 FA Women's Cup final 3–0 to rivals Arsenal, for whom Julie Fleeting scored a hat-trick.The next season she got a measure of revenge by scoring in Charlton's 1–0 FA Women's Community Shield win over Arsenal, then helping the club beat Everton 1–0 to win the 2005 FA Women's Cup.After suffering with injuries, Heatherson appeared as an 85th-minute substitute as Charlton lost the 2007 FA Women's Cup final to quadruple-winning Arsenal.