Charlotte and Bernard Cassez, parents of Florence Cassez, attend an interview with Reuters in Mexico City

Charlotte (L) and Bernard Cassez, parents of Florence Cassez, attend an interview with Reuters in Mexico City May 22, 2012. The parents of a Frenchwoman imprisoned in Mexico for kidnapping said on Tuesday they are optimistic the Supreme Court will free her after reviewing the case that has caused a diplomatic rift between France and Mexico. Florence Cassez, 37, has maintained she is innocent since her arrest in 2005, but the Mexican government has defended the conviction that sentenced her to 60 years in prison. France's former president Nicolas Sarkozy backed Cassez's fight to be freed and her parents said the Socialist party of his newly elected successor, Francois Hollande, has assured them he will work for her release. REUTERS/Henry Romero (MEXICO - Tags: POLITICS CRIME LAW)