The only thing I think has a good chance of happening is she’s forced out of the race due to crumbling polls numbers. At some point when the party decision makers understand the extent of her criminality and they see her dropping numbers, they’ll intervene.
One of the keys would be Sanders going on the offensive based on her criminality. The party doesn’t want Sanders so they’ll have to move Hillary out to bring someone to their liking into the race.
I doubt she’ll be charged and indicted.
I think there is a fairly good chance Hillary or her aides will be at least charged by the FBI which will hopefully be enough to tank her numbers. Trump may have to do the heavy lifting for Sanders, though, as he has pretty much done all along unless the leaks become too blatant to ignore.