Stephanie Santoro, the children's nanny, tells Life & Style magazine that Cara, one of the former couple's 9-year-old twins, blamed herself for the breakup.
She "used to sit and cry to me that she didn't understand and thought it was her fault," Santoro tells the magazine. "I would always tell her, 'It's not your fault, it's just something that happened. Mommy and Daddy will tell you more.'"
The exes can't stand to be around each other, which has left their eight kids "confused and traumatized."