Estate of Denial: Billionaire L’Oreal heiress Liliane Bettencourt is ready for “nuclear war” with her daughter and has asked her lawyers to revoke a reconciliation deal the two struck last year, according to a French Sunday paper.

Francoise Bettencourt-Meyers had, in one of a series of lawsuits, tried to have her 88-year-old mother declared mentally unfit to manage France’s largest private fortune, but in December the two announced that they had resolved their differences.

However Bettencourt’s laywer, Jean-Rene Farthouat, told France’s Journal du Dimanche that relations have turned hostile again.

“I saw Lilliane Bettencourt on Friday, and she is in favour of nuclear war, but we are waiting a bit before taking action,” Farthouat told the paper and later confirmed the quotes to AFP.

In a Friday letter, the multibillionaire asked her lawyer to “act firmly and without delay against the activities of (her) daughter.”