She's fully aware and at the same time very toxic.I'm thinking how to take she wouldn't agree for a second.My father had the same; he was a strict guy with a very powerful personality, but with dementia, now he is most like a child. For his condition, a psychiatrist has given him some medications that were used to control his bad temper and the progression of the disorder. So consulting a neurosurgeon or psychiatrist is recommended. Since the behavior has also changed, the best option would be a psychiatrist.