She needed to hide things like her collusion with the Russians to purchase 1/5 of US uranium production, which needed her sign off, and which Bill was negotiating for, and for which the Foundation received $40M in donations from the buyer, while the sale was subject to her review, and Bill received $500k in speaking fees in Moscow, and that is only the fee we know about. That is too complicated for most voters to parse, but she has to be one of the most corrupt people to seek the job of the presidency. I don't see how you can vote for her instead of someone like Johnson.
Anyway, it is funny (in a sad way) how she can wipe her drive clean, claim ignorance, and then her supporters say there is no evidence of wrongdoing because of the wiping. But the evidence is slowly being recovered, in spite of her best efforts.