She has to answer for three cases: the kidnapping of Estelle Mouzin in 2003, the kidnapping and murder of Marie-Angèle Domèce in 1988 and Joanna Parrish in 1990.
Monique Olivier, 74, has already been sentenced to life imprisonment for complicity in four murders and a gang rape by Michel Fourniret. She was then sentenced to 20 years in prison for complicity in a fifth murder committed by the same perpetrator.
Fourniret was convicted of the murder of seven young women or children between 1987 and 2001, including the Belgian girl Elisabeth Brichet.