And it all unfolded over the space of about four hours.
"And as I've said many times before, I wouldn't use The Washington Post as my source," she said at roughly 4 p.m. EDT, after a questioner cited the newspaper. "You should know better than that."
Yet, later on Twitter, she did exactly what she knew better than to do.
She used The Washington Post as a source in a tweet about the latest revelations on the Christopher Steele dossier:
The change of heart on The Washington Post was not lost on many of her Twitter followers.
Here is some of the response: