Well where are they? The few people you can find that say they support her only do so, because they falsely believe she has a better chance in the general.
She is a lying manipulative corporate whore.... She will say and do anything to be president! She has been copying Bernie in the primary from the start, and relying on her name recognition to win. That's why the establishment is doing everything it can to ensure people don't hear about Bernie.
That's not really rational from several different perspectives.
First off, I think Repubs would much rather run against Bernie in the general. They'd paint him as a doddering old leftist or the second coming of Hugo Chavez & campaign to the middle because there's room to do so. So they'll tear down Hillary & concern troll for Bernie.
I can't tell the trolls from the supposed progressives who blindly adopt Repub slogans. I figure that anybody who really respects Bernie won't use those tactics against friendly rivals because he sure as Hell doesn't.
Or we can act the way Repubs want us to act, take your pick.
At a deeper level, we need to understand that it's not just about the President but about their entourage as well, and about how they intend to actually run the govt. Bernie & Hillary would draw from the same pool of expertise, obviously, and Repubs have their own trusty veterans of the GWB years who'd eagerly do it all over again & more if they could. Their idea of how to run govt is to run it into the ground other than the military/security complex.
Sooo... I think it behooves those of us who'd rather that not happen be civil with each other & to listen to each other rather than to our true opponents. Anything else is shortsightedly foolish.