Herstory: a word invented in the late 20th century to mean "history", that is, history not written by men but by women, hence "herstory" (her story) rather than "history" (his story). The word "herstory" was invented because certain people with feminist predelictions thought the word "history" means, literally, "his" "story", as if to mean the story belongs to him, male possessive pronoun. Naturally, any person who is even a tad more than illiterate will realize that the word "history" derives from the Greek word "historia", which means "to inquire into". Thus "history" has absolutely nothing to do with male possessions, or even maleness. It appears that illiteracy was the standard of the day, being that it was enough for the word to "sound like" male possession of the story, instead of looking into (inquire into?) the true meaning of the word (history, that is).
Her story (herstory) appears to have been omitted from the narrative because some neglected to look into the history of the word "history". The history of herstory is one of smug satisfaction with the condition of illiteracy.