I can guarantee you that she won’t challenge Obama. In order for her to win she needs huge support from the black community.
What she needs is someone like Donald Trump to call out Obama over the BC. And instead of producing it Obama simply decides not to run for re-election so he can spend more time vacationing with his family.
Then Hillary can “reluctantly” run for the sake of her party and her country.
That scenerio calls for Obama to effectively resign and appoint the Hillabeast. He can’t do that. But then again the media allow him to do whatever the hell he wants so anything is possible.