The NRA of which Cain was CEO chose to settle the claims of SH for money. It doesn’t prove he did anything but it does make the electorate curious about the charges. That curiosity will not be satisfied with “I didn’t do anything, end of story.”
This is a routine practice. It’s much cheaper than litigating, even if you’re completely innocent and the litigation is completely frivolous and bogus. The charges were investigated and found to have no substance.
It was a severance package, not a settlement. And one of the two filed another similar complaint three years later at her next job. A serial complainer. (Maybe she needed more money.)
Cain says he didn’t do anything and there has been no evidence produced to say that he did. End of story.