>> My grandfather married my 14 year old grandma when he was 18 or 19 <<
An 18 year-old with a 14-year-old is nothing like a 45-year-old with a 13-year-old.
This happened in Hollywood in the ‘70s. About 30 miles from where I lived at the time. Hollywood isn’t the Bible Belt now and it sure wasn’t then either. Geimer’s mother dropped her off and didn’t stick around to supervise what was going on. She wasn’t stupid and wouldn’t have been surprised. Geimer herself is telling people that. The idea that anyone connected to Hollywood would have been shocked is a fantasy. Being Hollywood, the main surprise in the whole story is that it didn’t involve a boy.