The Reds full back, who recently signed a new contract, suffered the injury towards the end of a behind closed doors friendly earlier this month with scans revealing damage to her right knee.
Liverpool Manager Scott Rogers told the club website: “It is really disappointing to lose Martha so early into the year after she returned for pre-season in superb shape after missing the majority of last season.
“However, despite the injury we are confident that Martha can return towards the end of the FA WSL Spring Series to get some game time ahead of next season’s full 2017-2018 season.”
Source: ladies.liverpoolfc.com