Look at r/politics, r/s4p, any pro-bernie news or editorial blog, TYT...the list goes on
These are the places where Sander's support is it's most fervent. Anytime you hear about these places, or go to them, what do you see? Reddit is constantly plastered with anti-Hillary bullshit, scrutinizing her use of finances, raising suspicion of voter fraud, of voter suppression. TYT does nothing but sit around shitting on Hillary for hours on end.
In mainstream media, when they talk about the democratic primary, for weeks now, every story that gets traction has a negative slant. Bernie's supporters allege this, Bernie's campaign claims that.
NOBODY is talking about this sacred message of yours. Whether you hold the man responsible or not, his campaign has turned negative. He is not a message candidate anymore. His supporters will continue to attack Hillary regardless of what he says, and it will only weaken her.
This theoretical woman you talked about who is so uninformed because her primary hasn't happened yet; what do you think she will see once she starts paying attention?
She'll see a stubborn old man shouting about the same crap he has been for MONTHS now, and behind him his uncompromising zealots who do nothing but try and tear down the only candidate who has a chance at actually doing some good in this country.