Both Mary Jo and Fisher have called Fisher's relationship with Joey a "train wreck."
In the book, Buttafuoco discusses her own journey after the marriage that included a stint in the Betty Ford Center Rehab.
"One of my lowest points was one of the best things," she said of her time at the Betty Ford Center Rehab. There, she learned to live with what she had been through, she said. "It got me stronger."
Following her time in rehab, Mary Jo said she went out on her own and then fell in love with a man.
Now, she said she's "in such a good place."
"What I try to say to people is 'You can get out of these situations and not go back to them," she said. "These are toxic people and they drain you, and you need to move away from them."