The fact she will be viewed as a "survivor" for not having been indicted will be the biggest boost to her campaign. It'll have the opposite effect.
I still think class envy will kick in to some extent when the “little” people realize the Clinton’s used a public office to make themselves billionaires and evade taxes all the while claiming to be poor.
She only has two choices and neither of them involve continuing her campaign past some point. One of then will not be of her volition. Barring a decision to withdraw, I suspect a great tragedy will befall Hillary that will take her out of the running. Of course it will be an accident.