Ah, ok, I wasn’t sure about the progressive/degenerative part so didn’t wish to state it categorically.
The court papers stated dementia, but everything else is sealed. So no one has any idea what has caused it or the type. But you can understand why she is unable to drive or make certain decisions if it is a form of dementia, and I can’t see why the court papers would be wrong, she is assessed by independent medical personnel appointed by the court.
You can also see why she might not like the control at points, due to lack of understanding of her own limitations.
However the key point is it’s unlikely the court papers were inaccurate in their diagnosis and why the conservatoire was granted by the judge. All that’s public is conservatoire granted due to dementia.
This is really a situation where the public know something is wrong, they know the conservatoire is in place, but they have no idea of Britneys condition or limitations because the family have chosen not to make it public knowledge. And quite rightly too in my opinion.
Speculating as to the type of dementia, the symptoms, life expectancy, ability levels is pointless, because there are so many different types, but it would tell us, she needs protecting, she needs making her life as enjoyable as possible, doing as much of what she wishes that she is capable of, and that sadly she will not recover, it will only get worse.