The writers created the characters of Millie Markus and Vivian Caldwell who both claim to be the first woman over the falls in a barrel. It turns out that Vivian Caldwell was the first women to go over the falls and survive in the show's version of reality. The true first woman over the falls in a barrel to survive was really Annie Taylor in 1901. She was 65 at the time.
When Millie is signing the picture in the bar, she begins a sentence but her mouth doesn't move.