I would add that to my list of plausible hypotheses.
But my top guess is that Hitlery was making money from a gun-running operation, with better than even odds that Stephens was in on it. Your theory may explain why the operation went south. My alternate theory is that Hitlery intended for it to go south. In either case, that would give her the opportunity to cut Stephens out of the $ deal and to silence someone who had info about her.
It seems to me that LOTS of people who think they are “close to the Clintons” and know a lot of secrets end up being too dead to ever tell those secrets.
The fires at Benghazi were started by rogue attackers and the kidnapping of Stevens became impossible when he unexpectedly died of smoke inhalation and TWO SEALs SHOWED UP AGAINST ORDERS AND THE ATTACKERS WERE MET WITH RETURN FIRE.
The WH went dark at this point. Odunga's/Hillary's plan went south..