My Daughter Is 14 And 4 Days Ago She Was

My daughter is 14 and 4 days ago she was at soccer practice kicked the ball with her right foot her right knee popped and she went down. Ex- Ray showed ok. CT scan showed a small effusion. Emergency room at hospital put brace on her and crutches went to orthopedic doctor he put hinged brace said no crutches. Her knee is still swelled some still has limited movement doctor put her on Monica. I don't know how long she should avoid soccer and what do I need to do