Interesting, eh? She may be an odd duck but the entire Petraeus mess was odd and full of unanswered questions.
My take on Patraeus was that they divulged more than they needed to get him to resign. The side story was that he had shared classified information with other people. One would think if that had actually happened then a prosecution was in order, but there wasn't any prosecution.
I think the whole thing was concocted to fire a warning shot across his bow in order to keep him in line once he was not in the employ of the administration.
That's the Chicago way!