Apparently a blood clot related to the recent concussion caused by a fall
http://www.capitalnewyork.com/articl...atives-doubted
It is clear this has nothing to do with Benghazi, as Hillary did a faceplant about a year or two ago, and is obviously unstable.
Wearing the tinfoil hat, maybe Beeho would arrange for her to pass away from complications related to the blood clot/aneurism? That might well "bury" (pun intended) the whole Benghazi issue!