While announcing her retirement from rallying, Mouton stated her intention to start a family with Corsican sports journalist Claude Guarnieri. She had her daughter Jessie (Jessica) in 1987. Mouton credited her father Pierre's support as the secret for her success: "He loved driving. He loved fast cars. And I think he would have loved to do what I did. He was a prisoner of war for five years and when he came back he never had the opportunity to compete. But he came to all the rallies I did. And my mother came, too."