In the end, Herman concluded in his report that everyone needed therapy, including Brinkley, finding it "important that she let go of this fear and. ... It is helpful for Christie to be in her own psychotherapy. She can learn how to accept that despite what has happened, the children love their father."
He added, "She needs an outlet for her anger and feeling of betrayal ... and work on deeper issues relating to her parenting and her choice of male figures with whom she gets involved."
The shrink also said his major concern with awarding Brinkley sole custody is that she "will see this as carte blanche for leaving Peter out of the lives of their children," and he strongly advised that the couple stick to a visitation schedule.
Saying that both Christie and Peter have done a "superb job of being parents" and that the kids feel "equally bound to both of them," he added that Brinkley is doing the children a "disservice, compounding the problem, by cutting them off" from their father.
The tell-all trial has been grueling for Brinkley, the infomercial queen and former wife of "Piano Man" Billy Joel. She broke down crying during her turn on the stand Monday while recounting how devastated she was when she found out about her husband's affair and love of porn.
Brinkley's lawyer, Robert S. Cohen, said the testimony was extremely emotional.
"Anyone who saw her testimony yesterday would be brought to tears," he said on "Good Morning America" today. "It was a very difficult day. She described going from a life that was virtually nirvana ... but Cook's relationship with Internet porn burst that bubble."
On Monday, Brinkley went from a sunny smile as she entered the Long Island courthouse to sobs while on the witness stand explaining the collapse of her marriage.
"I was devastated, and I was in this emotional tug of war where I was discovering more and more every day. ... It was a nightmare," Brinkley said through tears. "I had to deal with his Internet porn life. Anyone who would chase a teenager, a young girl, I mean, where is his judgment?"
She went on to recount how she attempted to explain the situation to the couple's two young children, whose custody could be determined by the hearing.
"I told them, 'I think Daddy has fallen out of love with me. When that happens, people move apart, but that doesn't mean Mommy and Daddy don't love you,'" Brinkley said.
Cook has been linked to three different women since separating with Brinkley, while the supermodel says that she has not gone on a single date.
"I haven't even thought about dating or anything like that. I've been completely focused getting the kids over this painful event," she said.
Sheresky, Cook's attorney, stirred up some of the anger behind that beautiful smile as Brinkley parried his questions with cool sarcasm. At one point when Sheresky cited an e-mail in which she wrote Cook to berate him for making "bad choices over and over," Brinkley interjected, "You missed an 'over.'"
At another point, she corrected Sheresky's mention of his client's name, "It's 'Cook.' I thought you said 'Crook.'"
Brinkley admitted defacing one picture, saying that she took a wedding photo of the couple and blacked out his face so that there was "just his outfit remaining standing next to me like an empty wedding outfit" in the first few days after finding out about Cook's affair with 18-year-old Diana Bianchi. She explained her behavior by saying she felt like Cook, "the person I knew and loved," was an "invisible man."
The Associated Press contributed to this story.