Hillary Clinton was the first female nominee from a major US political party.  She received 3 million more votes than Trump.  And her opponent will likely go down as the most incompetent and unqualified president in United States history.  And certainly the first one who ever bragged about  how large his penis is and how much he enjoys grabbing women by the vagina.

50 years from now, historians might turn out to have a passing interest in how the 2016 election unfolded.  Her book, Margaret, is therefore of historical significance.  If you don't want to read her account of the election, fine.  Then don't read it.  That's your choice.

Hillary Clinton is doing all she can to give an honest and thorough account of what transpired.  If you have a problem with that, it's your problem, not hers.