Family lore has it that as a child, my grandmother had had a health problem that had seriously affected her. Her parents took in an orphan to help with basic chores, and one of the chores was to assist grandmother.
My great grandmother was a schoolteacher, and she wouldn't have thought that reading was beyond her daughter's capabilities unless something had happened.
I remember writing a poem, and reading it to Grandmother and she insisted I read it to my mother. It was rather a depressing, fatalistic poem.
Now I know why Grandmother seemed so excited about the poem. Her granddaughter could read and write.