No joke.
My dad's memory wasn't the greatest as he got into his later 70s. He somehow got it in his mind one day that he owned a Honda generator and that I had borrowed it. I would go over to his house at least once a week and he NEVER had a Honda generator, but he was absolutely convinced that not only that he owned one, but that I HAD IT! My sister and BIL eventually went with him to get a Honda generator. He stopped asking me about whether or not I borrowed his generator after that.
My ex's grandmother was living with my ex's mother. She had a bag of silver dollars from late 1800s to early 1900s. She asked my wife many times to take some for our girls. She finally agreed, and took 4 or 5 each.
The day after she took the coins, my mother-in-law came to us and said her mother was claiming we took ALL of her coins. We of course denied it and offered to return the few we accepted. She said not to worry about it.
We left that morning and drove home (they live in MD, and we in VA). As soon as we opened our front door, the phone was ringing. Mother-in-law was saying her mother was all distraught over the coins being "stolen". We said there's nothing we can do about that.
About 4 hours later, she called back. When her mother was in the kitchen, the MIL searched her room and found all the coins stuck in various hiding spots, and the empty paper bag they were in stuffed next to her bed.
She was suffering from Alzheimers, but they hadn't believed it was that bad yet.
Ford's lawyers refused to turn over Ford's medical records to the committee claiming privacy. I think there may be clues in there that she's not a well individual, and that she may have made outlandish claims to her therapist/doctor in the past.
Just a hunch.