Board Thread:Questions and Answers/@comment-24977220-20140523222343/@comment-24434902-20140716130528

If she does return, then it would either be late in season 5 (probably for the/a season finale) or in the beggining/middle of season 6 (for the sake of season 6 certering around something/having a special set of episodes where mordecai wil be stuck between chosing margaret and cj).