The estranged wife of the president's younger brother wants to write a book about her two decades in the Bush family, pitching her experiences as an insider's view of the powerful clan.

Sharon Bush, who is divorcing Neil Bush, is still in the "early stages" of putting her ideas together, said her spokesman Lou Colasuonno, confirming a report in the New York Observer.

"She's finally realized that she will be alone and needs to start a new life to support herself," Colasuonno said. "She's got a good story to tell, and she wants to tell it."

Sharon Bush married Neil Bush in 1980, and the couple have three teenage children.

Colasuonno dismissed the notion that shopping a book might be a negotiating tactic in settlement talks between the separated spouses.

"She has done everything she can to save this marriage," Colasuonno said. "This is simply the first step of the rest of her life, nothing more and nothing less."

Neil Bush is founder and CEO of the Austin, Texas, software company Ignite Inc.

His lawyer, Richard Flowers Jr., did not immediately return a telephone call for comment.