-excerpt- Kelley alerted the FBI about the emails that appeared to be an attempt to blackmail Petraeus, which started the investigation, said the sources, who are close friends of the Petraeuses. In addition, the threatening emails might not have come from biographer Paula Broadwell, as widely reported. Kelley, a Tampa, Fla. resident who is married with three children, and sister Natalie are close friends of the Petraeus' and spent holidays together. And she was not having an affair with the retired, four-star Army general, sources close to the family tell Fox News.