How can I find placement for my mom (dementia patient)?

My 82-year-old mother needs placement. I have her on Medicare/ Medicaid(as advised). She was on home care and they really could not help me so I switched providers and she is now in Hospice but I don't think she will qualify in the future because she is physically healthy and doing very well. I have asked the case mgr to please help me find a place from mom. It has been over a month and there have been no open doors. I'm told there are no beds or she does not qualify.  She has a small pension and her SS. I really need a place for mom. I am not interested in a home type stay but something like nursing home or memory support / assisted living.  It was suggested that maybe they're really not trying to place her.