Mackenzie Phillips' family members are split over the veracity of her claims that she and her father, the late John Phillips, had an incestuous relationship.
"I knew it was true," Mackenzie's half-sister Chynna Phillips told Us Weekly. "I mean, who in their right mind would make such a claim if it wasn't true?"
"They were both doing drugs together. After long nights of heroin use, she's claiming that she once woke up and that my father was on top of her having sex with her," Chynna said. "Was he actually raping her? I don't know. Do I believe that they had an incestuous relationship ...
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