My sister has deteriorated from a healthy 43 year old woman to a completely different person in two weeks. She can't walk, has numbness in her legs, hands, and stomach. She also has severe mental deficits now and can't remember hardly anything. We've taken her to the emergency room five times but she is told she needs to eat properly and is depressed. To me she is acting like she did when she had viral meningitis as a teenager. Please give advice.