The tears of the frail little lady who appeared Thursday morning in front of the investigating chamber of the Rennes Court of Appeal (Ille-et-Vilaine) to request her release were not convinced.
Indicted for his complicity in the death of Magali Blandin, his daughter-in-law, Monique Gaillard, 72, remains in pre-trial detention.
Implicated on the same charges, Jean, her husband aged 75, did not appeal against his detention.
Both are suspected of having known the dark designs of their son Jérôme, who confessed to having killed Magali, his 42-year-old wife and mother of their four children.
Jérôme Gaillard, 45, admitted to having gone on the morning of February 11 to Montfort-sur-Meu where his wife had lived for several months and to have struck her twice with a baseball bat leaving her for dead in her apartment.
The man then returned in the evening to bury him not far from the family farm of Montauban-de-Bretagne, which his wife had wanted to leave at all costs.
Murder of Magali Blandin: the origins of an almost perfect crime
The alleged complicity of the parents in this murder goes back several months, according to the elements of the investigation.
In the fall, Jérôme Gaillard plans to have his wife who wants a divorce removed.
The unemployed man then turned to Georgians - also indicted - to carry out his project in exchange for 20,000 euros.
To collect the sum, the father of the family turns to his parents, retired cattle dealers, to whom he is very close.
Jean and Monique Gaillard then pay him 50,000 euros.
Did they know what the money was going to be used for?
They say they thought they would help educate their children, maintain their son's daily lifestyle and pay for the divorce.
Instructions to his parents on how to use the family computer
The parents are also suspected of having provided an alibi for their son.
On the morning of February 11, when he was about to kill his wife, Jérôme Gaillard allegedly asked his father, Jean, to go to the house in Montauban-de-Bretagne to use the home computer and the telephone.
Jean Gaillard recognized this participation.
His wife, Monique, may have driven her husband that day.
At noon, while Magali lies dead in her apartment, Jérôme and his parents have lunch together.
Reacting to the decision to keep Monique Gaillard in detention, Me Gwendoline Ténier, her lawyer, is surprised by AFP: “The parents and their son were together more than a month after the events.
If there should be any consultation, it has already taken place.
In addition, the living spaces and communication tools have all been placed under seal.
The Rennes penalist hopes that the judicial information will advance "in a sufficiently sustained manner so that the phase of provisional detention of Monique Gaillard does not drag on, because her place is not in a remand center".
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The investigating chamber of the Rennes Court of Appeal also ordered the continued pre-trial detention of a Georgian, suspected of having blackmailed Jérôme Gaillard after Magali's disappearance.
The man is also indicted for having destroyed the Opel Astra which would have been used to transport the body from the apartment where she was killed to the wood where she was buried.
Only a few parts of this car were found by investigators.