You can play this game too. It will be fun.
Somehow, you need to explain to her the one thing that she cannot see for herself. You have to use words to open her eyes.
You might even bring a trusted medical professional with you. Or two, just to eliminate the doubt.
You have to remain calm and logical.
But if the President really has dementia, it's not the choir they need to convince, it's his supporters.
It's entirely counterproductive.
And when you realise that, it becomes clear that the script writers are going crazy.
Donald Trump is perfectly sane and A-OK.
But they want you to THINK he's crazy.
Boom!