I don't think anything is in the bag come November. She hasn't faced too much negative campaigning from the GOP, which won't be tough. Plus there is the FBI thing. We will see but I don't think anything is certain with the general election.
She has almost without reservation faced more persistent, unending, withering GOP attacks than virtually any other Democratic candidate in the past forty years. The GOP had assumed she would be the nominee for YEARS and so pushed several clearly politically motivated scandals to try to derail her, and that was before she even announced for President.
This is simply revisionist history bullshit.