NASCAR champion Greg Biffle's wife Cristina sent a text to her mom telling her she and her family were 'in trouble' just moments before the plane crash that killed them. Cristina's mother, Cathy Grossu, shared details of the haunting last text from her daughter with People on Thursday, December 18. "She texted me from the plane and she said, 'We're in trouble.' And that was it," an emotional Grossu told the outlet. "So we're devastated. We're brokenhearted.