Can I get permanent care for my mom if she doesn't have Medicare?

I live out of state and my brother has been my mother's primary caregiver. He is currently unavailable to care for my mom, and she needs 24-hour care. She can no longer make any decisions for herself and doesn't receive medicare benefits. I was recently contacted by the hospital and nursing home (where she would receive rehab care), and was told that I have to find permanent aftercare before they will admit her to rehab care.