Explaination about a text.

Hello,

In this sentence: "As many of us now begin to discover
the truths of our times, we come to see that most if not all
the beliefs Which have hitherto comprised our reality framework
are false." , I think the worw "hitherto" is a printing mistake, may be
it must be understood as the three words "hit her to" but if so, what is the
meaning of the sentence and what is the word "her" related to?.

Have a good day.
Thank you.