Hillary was the driving force behind Bill's presidency. Her and Madeline Albright. Look up their ties to Zbigniew Brz-a-fuck-it.
She might have leveraged the Lewinsky situation - but the whole Lewinsky scandal was extremely fortuitous, really. Investigations into the Kosovo and Bosnia campaigns stalled in the public (wait… We bombed people?). There was also the whole articles of impeachment thing - which the media mischaractarized as being a reaction to Lewinsky.