Gibbon's Decline and Fall - Sheri S. Tepper
A wave of fundamentalism is sweeping across the globe as the millennium approaches, and a power-hungry presidential candidate sees his ticket to success in making an example out of a teenage girl who abandoned her infant in a Dumpster. Taking the girl's case is Carolyn Crespin, a former attorney, who left her job for a quiet family life. Now she must call upon five friends from college, who took a vow to always stand together. But their success might depend on the assistance of Sophy, the enigmatic sixth friend, whom they all believed dead.