It usually happens later in the afternoon - around 5 p.m. When asked why she is crying, she doesn't know and can't stop herself. She also seems to get very warm and have a headache. It usually stops within a half or so. After about two hours she doesn't even remember that she did it.
Also, Alzheimers, neurological problems.
I other words, get her to a doctor now.
Let us know what is going on with your mom.
Prayers and thoughts are with you.