The 24-year-old scored 13 times in 49 competitive appearances for the Saints during a two-year spell and won the club's Goal of the Season award on two occasions, one of which was for a strike against the Magpies in February.
The midfielder spent two years with Leicester City Women in the Barclays Women's Super League (WSL) prior to her move to Southampton, featuring 46 times as the Foxes maintained their position in the top flight.
A product of Chelsea's academy, scoring 14 goals in 17 appearances in her last season there, she signed her first professional contract at Everton. On Merseyside, she made 19 appearances before spending the second-half of the 2020/21 campaign on loan at Bristol City.