How can my friend get his mother out of a nursing home?

She has dementia and was admitted for a 60 day stay in december of 2016 to receive physical therapy. Prior to her admittance she had been cared for at home around the clock by several care givers and one of her sons. She also had a compression fracture at the time of admission. Once she was admitted the nursing home decided to delay beginning PT. The nursing home told my friend that medicare would pay for her to stay there and receive PT, and since the year was about to roll over and become 2017 she could stay an additional 60 days. She has now been there for months. The nursing home refuses to allow her to come home even for a short visit. In order for my friend to be able to bring his mother home to live he would have to meet their list of criteria which seems unreasonable to me. He would have to have the approval of the administrator and caseworker at the nursing home, of her doctor, of his mother's caseworker at the Area Agency on Aging (who has stated straight out the she will never give it). There would also have to be two people working at all times and anyone working with her would have to be a CNA. My friend's mom can stand, but is unable to walk. What's funny is that as soon as my friend began talking in earnest about bringing his mom home, the PT immediately stopped. The reason given was that they wanted to back off on the therapy and see how she did without it......and of course its not even an option to bring her home if she isnt ambulatory. What the heck is going on here? And where do we begin in order to get her back home?