In the fantasy version of the world that exists inside my head (the one where the assassin's bullet missed JFK and hit Robert Kardashian's testicals) Hillary Clinton would have been a no show at yesterday's presidential debate.
Clinton campaign staff would have released a statement prior to the debate claiming that Trump had proved beyond doubt that he was unfit to be a candidate for President and that he was demonstrably incapable of representing the majority of Americans. The statement would go on to say that Clinton was not prepared to share a stage with Trump or accord any further legitimacy to his campaign.
Trump would then be left to attend the debate on his own. Clinton meanwhile would visit a women's shelter and hold a press conference to talk about the woeful state of domestic violence in the USA, promising to make it a priority in her first term in office.
Of course this is all just fantasy. It could never happen in the real world because...umm...anyone?