And if you doubt Wahida Mohamed, 39, she says: "This is all documented. You can see it on my Facebook page."
Wahida, aka Um Hanadi, is said to brag that she is "more wanted than the Prime Minister" by the terrorist group. She reportedly leads a force of 70 male fighters in the town of Shirqat, 50 miles south of the Iraqi city of Mosul.
In an interview with CNN, Um Hanadi revealed she had received death threats from the top leadership of Islamic State, including from Abu Bakr (al-Baghdadi).
She also detailed the times terrorists have planted car bombs outside her home since she began fighting the al Qaeda terrorists in 2004.
"2006, 2009, 2010, three car bombs in 2013 and in 2014," she told CNN , adding she had shrapnel in her head and legs.
Her first and second husbands were killed in action while ISIS also killed her father and three brothers, sheep, dogs and birds, the broadcaster said .
She told the network of her battles with ISIS: "I fought them. I beheaded them.
"I cooked their heads, I burned their bodies.
]"This is all documented. You can see it on my Facebook page," she added.
The page featured photos of her holding a severed head as well as others showing severed heads in a cooking pot and standing among burned corpses.
However, CNN said it was impossible to verify if the photos were authentic.
She had two daughters, aged 22 and 20, who had their own children.