C. Ann, I don't have those answers, I think it depends on the person. But a friend of mine's mom has this and it is very sad.
My friend had her mom living with her for a while, but it got too dangerous. I hear they are coming out with medicines to help people and it's possible that your mom will be able to benefit from them. You'll have to find out about that from your doctor of course.
My friend's mom is far too advanced.
Her mom would insist on cooking and trying to cut vegetables, take baths and live her life, but she had no idea what she was really doing.
The bath was filled with hot water only, she was holding onto the sharp end of the knife, and forgot to use a pan to cook with.
My friend couldn't do anything at all including sleep because of her mom. It was awful. I tried to help, but there was only so much I could do.
She eventually had to put her in a nursing home because she couldn't take it anymore.
I hope you don't wait so long. You have enough to handle already.
{{{hugs}}}