The heartbroken sister of fallen? Benghazi hero Glen Doherty ?delivered her sharpest criticism yet of former U.S. Secretary of State Hillary Clinton yesterday, saying the presidential candidate “wasn’t truthful” about the 2012 terrorist attack.

“She knows that she knew what happened that day and she wasn’t truthful,” Kate Quigley said on Boston Herald Radio’s “Morning Meeting” show yesterday. “This is a woman that will do and say anything to get what she wants. I have very little respect for her. I know what she said to me and she can say all day long that she didn’t say it. That’s her cross to bear.”

The fresh outrage thrusts Clinton’s top Bay State backers, U.S. Sen. Edward J. Markey and U.S. Rep. Stephen Lynch — who have worked tirelessly to retrieve Doherty’s wartime benefits for Quigley and her family — into a political pickle as they hit the campaign trail for the Demo­cratic front-runner.

Neither Markey — who filed a bill in Doherty’s honor yesterday — nor Lynch responded to multiple requests for comment about renewed concerns about Clinton’s actions and whether she could have done more to protect the U.S. Consulate in Benghazi, Libya.

A new email indicates that the Pentagon reached out to Clinton’s office to offer military help — an offer that may have prevented?Doherty’s death, as well as the deaths of his CIA co-worker ?Ty Woods, U.S. Ambassador to Libya Christopher Stevens and Foreign Service Information Management Officer Sean Smith.

The news contradicts earlier testimony from former U.S. ?Defense Secretary Leon Panetta, who told lawmakers in 2013 that the lack of early warning and the long distance from the attack prevented a military response.

“As someone who has suffered so much heartache over the loss of Glen, it is hard to consider ?the possibility that help could have come much sooner,” Quigley said.

“It is another testament to the character of our then-secretary of state and her staff that they continue to deny responsibility.”