When Diane asked her if she thinks her mother sold her, the 'Ghost' star said: "No. "In my deep heart, I don't think it was a straightforward transaction. But she still did give him the access and put me in harms way."
Demi writes in length about her childhood in her upcoming memoir, where she writes that both her parents battled alcoholism and raised her in an environment that was filled with infidelity and fights.
The Rough Night actress recalls being 12 years old when her mother first tried to take her own life, and says she saved her by using her fingers to dig the pills her mother had swallowed out of her mouth.
She said: "[My childhood] was done. [It was a] life-changing moment."
Demi — who is mother to Rumer, 31, Scout, 28, and Tallulah, 25, whom she has with her ex-husband Bruce Willis — has also battled drug and alcohol addiction herself, and recently opened up about her battle for sobriety, and compared the feeling to her decision to have natural births for her three kids.
She previously explained: "In retrospect, what I realised is that when I opened the door [again], it was just giving my power away.
"I guess I would think of it like this: It was really important to me to have natural childbirth because I didn't want to miss a moment.
"And with that I experienced pain. So part of being sober is, I don't want to miss a moment of life, of that texture, even if that means being in some pain."
