Brinkley: 'My life as I knew it had vanished'

• Story Highlights
• Brinkley testified the stepfather of the 18-year-old informed her of the affair
  
• Former model said she found e-mails from Bianchi and porn sites Cook visited
  
• Brinkley, 54, and Cook, 49, wed in 1996. She filed for divorce a decade later
  
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