The The Real Housewives of New York star says she grew up in a "war zone," thanks to her violent alcoholic father, and her nightmare didn't stop until she gave him a taste of his own medicine.
In one particularly dramatic excerpt from her book Life on the Ramona Coaster, the reality TV star describes the moment she finally found the courage to save herself.
"He gets in my face. I can smell the rancid alcohol on his breath and see the rancor in his eyes," she wrote. "Then he gets in my mother's face, alternating scathing insults between us."
"Something he says, I can't recall what, hits a nerve. I snap."
Singer writes that she grabbed the "biggest knife with the longest and thickest blade" and fought back.
"Without hesitation, I lunge toward him, point the sharp blade directly at his face and scream, 'Stop it. Stop it right now… Or I swear I will take this knife and shove it into your neck,'" she wrote. "He backs away, startled."
He did back off, and the incident was never discussed again, but it had a devastating effect on the then-15-year-old.
"I lost forever whatever was left of my childhood," she wrote. "I lost my innocence."
She and her father didn't reconcile until shortly before his death in 2008.
Life on the Ramona Coaster hits bookshelves on Tuesday, July 28, 2015.
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