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Amy Duggar King alleges in her debut memoir Holy Disruptor that her grandfather Jimmy Lee Duggar became physically abusive to Deanna Duggar after he learned she planned to move in with her boyfriend at 21

She said that Deanna's brother, Jim Bob Duggar, had to step in, and he "saved her life that day" after Jimmy Lee came close to "murdering" her mom

Amy also reveals in her memoir that she wasn't allowed to be alone with her grandfather and found out the reason why after his 2009 death

Amy Duggar King is opening up about a painful family incident between her grandfather, Jimmy Lee Duggar, and her mother, Deanna Duggar .

In her debut memoir Holy Disruptor , the 19 Kids and Counting alum, 39, alleges that Jimmy Lee once came close to “murdering” her mother Deann

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