Don't get me wrong, I don't think that Clinton loses this election, but lets not pretend this is all "Bernie Bros taking the wind out of her sails". People don't trust her and she's not very well liked, right or wrong. Personally I think that the lack of trust is warranted, but that's pretty warranted with most politicians.
Her "evolutions" on policies are just way too convenient in their timing however. IE: this election cycle
http://imgur.com/gallery/yZ0LZDP