Nothing is Hillary's fault. Hillary is a victim. Hillary didn't lose because she was the worst candidate in history, she lost because someone, or something, torpedoed her. The face of the torpedo changes with the frequency of an infant's diapers, but it's always there - "the reason" Hillary lost.
The real reason, of course, is that Trump connected with middle-class working voters in a way Mrs. Clinton didn't even attempt. She was brazen about the idea that she didn't need those people to win, so she ignored them. Trump capitalized and flipped the rust belt.