I had tethered spinal cord release surgery with a laminectomy. Ask her Dr or pt what types of stretches she can do. 1 thing that I know helped me was to lay on your side and reach your arm above your head as far as is comfortable and lif the leg and rotate the hip area, if that makes sense. I can get a video link showing what I'm talking about if you like. Also did they give her muscle relaxers or pain meds?