This forum is for questions and support regarding neurology issues such as:
Alzheimer's Disease,
ALS,
Autism, Brain Cancer,
Cerebral Palsy, Chronic Pain,
Epilepsy,
Fibromyalgia, Headaches, MS, Neuralgia, Neuropathy, Parkinson's Disease, RSD, Sleep Disorders,
Stroke, Traumatic Brain Injury
It will be very hard to ascertain the cause of her problems with your descriptions. Numbness and loss of balance can have several causes and we may be dealing with a demyelinating condition (Like MS) that was not yet crystal clear at the time the scans were done. I suggest that you discuss with your doctor regarding presenting your case in a multidisciplinary conference where they tackle difficult cases. In this way, a number of doctors can ponder on the case and hopefully come up with a diagnosis and a good management plan.
Regards and I hope you and your doctors get to the bottom of this soon.