 During their trip to Peru in June 1995 , sponsored by The Pembroke Hill School , Farrar met and befriended Margaret Hacker , whose children also attended the school . Hacker was a registered nurse married to an anesthesiologist , and also unhappy with her marriage . The two began an affair shortly after both families returned from Peru . In late July , Farrar again asked Green for a divorce . Green responded hysterically and told the children that their father was leaving them . Green was especially upset that a broken home might later disqualify the children from debutante events such as the Belles of the American Royal . 
