First, to even speak of Hillary being sick within the DNC would seem to be tantamount to treason, given how hard the campaign worked to deny it. So that sounds awfully risky for her to have been doing on a regular basis as the book suggests. Second:
“If a nominee became disabled, she explains, the party chair would oversee the process of filling the vacancy.”
Doesn’t mean she could just plunk in a substitute of her own choice, there would be some sort of “process” that she would “oversee”. Of course that would have been an E-ticked thing to see ;-) - but wouldn’t it have been far more likely that Bernie would become the nominee than Biden as she has suggested? And putting Bernie in place of Hillary would have torn the D party apart just as if the R party has tried to substitute Jeb! for Trump.
So, maybe a bit of revisionism going on here. Still, bigly entertaining!
"The more things change, the more they stay the same."