Hi Janet,
I know what you mean.
Living and caring for a person with dementia is, I think, more soul destroying for the carer than the demented person. It is the carer than needs the support so often because they see the person they loved being destroyed and replaced by a person they don't know. While the demented person just looses it, and gradually, thank goddess, forgets it all.
In the case you refer to you can hear the frustration, sorrow and anger in the carer and my heart grieves for her. And I think the demented person appears to be coping well, within the boundaries that she is not sure of who she is and what she is doing.
And society doesn't care. If some one is different to 'normal' reject them, ignore them, hope they go away, and please goddess don't let it happen to me. But it does.
Hugs My Sister
Cindy