"What Happened" was she ran the worst Presidential campaign in the history of politics. I don't need a book to tell me that.
She portrayed herself as an elite, aristocratic queen, who simply 'deserves' to win. Parallel to that, she went with her "vote for my vagina" slogan, thinking people would overlook all of her corruption and shortcomings simply because she is female. Neither of these slogans outlines a future or a position on anything. They are just 'default' positions.
"I am, because I am", is not an inspiring way to run a campaign.