Hillary Clinton was the secretary of state when Ambassador Stevens came under fire and was killed in Benghazi. Therefore, the buck stops with her--she does share some blame. Clinton advocated the overthrow of the Libyan government - leading to an unstable situation. The United States did not have a strategy for securing the country; creating a dangerous environment for Americans working in Libya.
There were many times that Clinton could have stepped into the situation in Benghazi and had a different result. Stevens asked for additional security, and Clinton never responded by helping him. On the day of the attacks, Clinton didn't send help soon enough. If she had sent military help, Stevens and the rest would have been saved in time.
No, Hillary Clinton does not share blame for Ambassador Stevens's death in the attack on Benghazi. While it appears that Hillary Clinton may be responsible for obfuscating the facts surrounding this attack, she is not responsible for the attack itself. More ambassadors were killed under George W. Bush and he was never blamed for these deaths.
It sad that Hillary Clinton has to take all the blame that happened in Benghazi, as if she planner and executor of the incidence. Donald Trump's blame on Clinton is out ignorance and hate towards Clinton. Mrs. Clinton does not share and should not share blame for Ambassador Stevens' death.