Her problem is the same problem any candidate who uses the DNC inner network of consultants, whatever archaic tome the DNC communications apparatus is working from, and generally follows a failed old playbook.
Replying to a narrative, however absurd, that people are "coming to invade and destroy us" with statistics and academic jargon isn't just flat, it's almost detached. I remarked once during an '08 primary (after a few drinks) that sometimes it was like if HAL9000 was in a presidential debate.
It is worth remembering, Bill Clinton and Obama were the insurgent candidates.
DNC/DSCC/DCCC access is all tied to how much money you can raise, followed closely by how much of it you spend with their "preferred vendors."
Not that this is out of the ordinary. While the committees are not commercial operations outright, entire commercial sectors exist in orbit of them.
While not relating to the presidential race specifically, Democratic leadership recently said they are blacklisting any organization that works with a primary challenger to an incumbent, basically cutting off all expertise and advanced analytics from their own left flank.
