The mother of Sean Smith, an American who died during the 2012 Benghazi terrorist attack, exploded at Hillary Clinton during an emotional appearance on Fox News last night.

Pat Smith had recently attended new the Benghazi-themed film, 13 Hours. Smith told Megyn Kelly she was unable to stay for the whole film after becoming distraught at the portrayal of her departed son. Smith then turned her anger to Hillary Clinton, screaming “Hillary is a liar! I know what she told me,” in reference to the administration blaming a YouTube video for the attack.

When Kelly brought up Clinton’s recent denial that she told the Benghazi families a video was behind the attack, Smith replied, “Bull feathers!” She said that, in addition to Clinton, President Obama, Vice President Biden, former CIA Director Leon Panetta, and former U.N. Ambassador Susan Rice “all said, that it was the video, every one of them.”

Here’s their exchange:

KELLY: I want to ask Pat, because my heart goes out to you as a mother, and I know how difficult it must have been for you. And you were not able to stay throughout the whole movie.
SMITH: I left as soon as Sean came on screen, or the person who portrayed him. I couldn’t handle it. Hillary is a liar! I know what she told me!
KELLY: Oh, Pat. I know it must be so hard. So many people want to put this behind them and say, Hillary sat there and testified, she testified with her own 13 hours. And they say it’s done. They say there’s no story about Benghazi. Aand that she did everything she could do to the war and she came right out and said she is not lying. Suggesting you are the one who is lying about what happened that Air Force base.
SMITH: Bull feathers! That is is just plain old bull! I know what she said and not only did she say it, but Obama said the same thing to me. And Panetta. And Biden. And Susan Rice. I went up to all of them, begging them to tell me what happened. And they all said, that it was the video. Every one of them.