It's sad that it took so long before your mother was able to get the help she needed. A few years ago, I was organizing a History Fair for my homeschool group and a certain woman was chosen to help me plan everything (from another HS group in the city). I'll never forget, when one day over the phone, she told me that God had woke her from and sound sleep and was in her bedroom. Then she said God told her to fast for 40 days and 40 nights...and she did. She said He was in her room and "spoke" to her.
Well, you see back when I was a child there was no treatment at all. In the early 70's I initiated committment proceedings with my brother and father. Electro shock therapy and massive doses of Thorazine. Turned her into a zombie for quite a while. And to the rest of you who disparage mental illness, one of the saddest days of my life was when the Sheriff came to the door and took my Mama away.
Just go down to your local state mental hospital and get a good dose of insanity and then come back to the real world and thank your God that it's not someone you love in that state.