Does the name Junaid Hussein ring a bell? According to Sally-Ann Jones, it should. Because she is going to avenge his death, one tweet at a time.

The self-proclaimed “White Widow” joined ISIS in 2013 after she left the UK for Syria with her new husband. Hussein, a British-born hacker, was a key ISIS leader who spun propaganda on the Internet and infiltrated enemy computers. After joining him with her 10 year-old son in tow, Jones quickly amassed her own social media following, earning the couple the nickname “Mr. and Mrs. Terror.”

Hussein’s activities earned him a spot at the top of the Pentagon’s hit list. In August, he was killed by an American drone strike on his car. Upon learning of his death, Jones said on Twitter, “I’m proud my husband was killed by the biggest enemy of Allah, may Allah be pleased with him, and I will never love anyone but him.”

Just because Mr. Terror is gone doesn’t mean Mrs. Terror has retired. In early October, Jones doxxed Sgt. Dillard Johnson by posting his address and personal photos on ISIS channels. It was Jones’ hope that other militants would seek out Johnson and get revenge for the thousands of jihadists he bragged about killing in his book, “Carnivore.” Jones is also credited with doxxing Robert O’Neil, the Navy SEAL who killed Osama Bin Laden, for the same reason.

In a recent tweet, Jones threatened to dox more soldiers. “I’m gonna come back & expose some more of your military America & I’m gonna prove to you how social media will be your downfall,” she tweeted.

In another tweet, she claims that American men “aren’t man enough” fight ISIS. ”American men fight me online as they aren’t man enough to come here and fight my husband’s brothers… (no wonder your women are all over ISIS).”

Last month, the UK put Jones on its list of ISIS’ most dangerous recruiters.