BeanE, it's just my opinion based on my years as a nurse. I am sure that there are cases where neuro patients have experienced every symptom in the book, ranging the whole spectrum, but the more severe ones you describe, in my opinion, would be the result of a much more serious injury. Gail had a black eye. I think it may be stretching that known fact quite a bit to her having a severe brain injury or bad concussion. In my opinion, if Gail had a brain injury serious enough for her to experience those symptoms, due to it, others around her would have clearly noticed this and would have sought medical care for her immediately. It is further my opinion that any possible psychological symptoms Gail may have been experiencing were the result of the tremendous amount of stress, emotional distress, anxiety, fear and possible sleep-deprivation she was enduring during the days before she disappeared. This is all my personal opinion. You may disregard if you like.