Yvonne Chevallier had none of her husband's social skills.
Gaunt and prematurely haggard, she was best be described as plain.


Biographical sketches of the woman painted her as dull, witless and rather uncouth—an uneducated farm girl more at home in a barnyard than a castle. Crime author Colin Wilson described her as "awkward, gauche, and conversationally clumsy" in his Mammoth Book of True Crime.

Sometime in 1950, son Mathieu developed an illness that lingered for several weeks. Yvonne moved the boy into the couple's bedroom in case an emergency developed overnight.
Yvonne tried to win back her husband's affection. She read about art and literature and tried to stay abreast of politics. She made appointments at fashionable beauty salons and bought more flattering clothes.
She did her best to entice
He told her, "You disgust me."
His coolness had become contempt.



