In the end, Valérie Bacot could take it no longer. For almost four decades, her husband, Daniel Polette, had been a malign presence that dominated her life: he molested her when she was 12, made her pregnant at 17 and then trapped her in an abusive relationship, during which she bore him three more children.

Now in the ultimate humiliation, he was pimping her out for sex in the back of their battered Peugeot people-carrier in the woods near their home in Saône-et-Loire, in central France, getting his kicks from watching through a chink in the curtain in its rear window.

In March 2016, after an encounter with a particularly brutal client, Bacot claims to have grabbed the loaded pistol that Polette kept next to the driver’s seat and, closing her eyes, shot him.

“There was a loud noise; the flash, the smell,” she said in an interview with Le Parisien recently. “I got out of the car, opened the door, he fell. I thought only of saving myself because I was sure he was going to kill me.”

But he was dead. When Bacot told her elder children she had killed their father, they hugged her. Two of her sons, together with her daughter’s boyfriend, then helped her bury his remains in the forest. “I packed the earth down like crazy with my hands. I was too afraid he would come out to kill us,” she recalled.

Next month Bacot, 40, goes on trial for murder in a case that has turned a spotlight on conjugal violence in France — and on the few victims who dare to fight back.

“I packed the earth down like crazy with my hands. I was too afraid he would come out to kill us.”

More than 384,000 people have signed a petition demanding Bacot’s freedom. A television interview with her drew an audience of 4.5 million and a book in which she tells her life story went to the top of the bestseller list after its recent release.

“I was struck by Valérie’s strength, her courage and her intelligence. I really wanted to help her to tell this story,” said Clémence de Blasi, a journalist who ghostwrote the book, Tout le Monde Savait (Everyone Knew), having met Bacot after her release in October 2018 pending her trial.

In talking to Bacot’s children and others around her, de Blasi realized what a powerful hold Polette had over his wife. “He was watching her permanently, day and night,” she told me. “He was someone who was extremely dangerous and ready to do anything.”

Janine Bonaggiunta and Nathalie Tomasini, lawyers for Bacot, claim that “Valérie was transformed by the extreme violence.”

It was Bacot’s mother who first brought Polette into her daughter’s life. After breaking up with her husband, she had a series of casual relationships before meeting the lorry driver in 1992 and inviting him to live in their home in the village of La Clayette, 60 miles north of Lyon.

Polette soon began to show an unhealthy interest in the young girl, who had just turned 12, going into the bathroom while she was washing and insisting on rubbing her with cream. Bacot’s mother tried to keep his activities quiet but word eventually reached the local authorities, and in 1995 Polette was arrested and convicted of sex offenses against a minor.

Bizarrely, however, on his release after 33 months in jail, he was allowed to return to the home in La Clayette and was soon abusing Bacot again and raping her. After she became pregnant in 1998, she moved with him into a little house in Baudemont, a neighboring village of a few hundred people, where, despite an age difference of 25 years, they lived as a couple for two decades, marrying in 2008.

According to Bacot’s account, it was anything but marital bliss: he frequently beat her, on one occasion breaking her nose and on another holding an unloaded pistol against her temple and pulling the trigger. “The next time there will be a bullet for you and for each of the children,” he told her.

When Bacot told her elder children she had killed their father, they hugged her.

Bacot thought of denouncing him to police but was fearful of how he would retaliate and did not dare to go herself. Instead she sent her children, but the police refused to listen to their claims and sent them away.

In the meantime, he had forced her into prostitution, initially only at weekends but then, after he gave up his job, almost full-time. To get clients, he made her distribute flyers in the local area. Once their daughter was 14, Bacot feared he would force the girl to sell her body too.

With no money and no friends or family to turn to, Bacot felt she had no alternative but to stay with her tormentor — until the day she shot him.

At first the family pretended he had gone away. But Bacot was eventually denounced to the police, apparently by the mother of her daughter’s boyfriend. At 6am one day in October 2017, the police came for her; she knew she was going to be arrested and for days had been sleeping in her clothes.

Bacot’s experiences show in an extreme form the plight of women who fall victim to conjugal violence and the failings of social services, according to her lawyers, Janine Bonaggiunta and Nathalie Tomasini. “Valérie was transformed by the extreme violence she suffered into a remote-controlled puppet who, against her will, became an object for her perverse husband,” they write in a preface to the book.

In too many cases, such violence ends with the woman being murdered. Earlier this month a 31-year-old mother of three in the Gironde died after her former partner shot her in both legs, poured petrol on her and set her on fire while still alive.

It was the 39th such killing this year, after 90 in 2020, according to Féminicides par Compagnons ou Ex (Women Killed by Partners or Exes), a campaigning group that tracks such cases.

Jacqueline Sauvage, who was pardoned by François Hollande for killing her husband in self-defense following years of abuse.

In a few instances such as Bacot’s, however, it is the victim who turns killer — as with Jacqueline Sauvage, whose case became a cause célèbre in France after she was sentenced to ten years in jail for shooting dead her husband in 2012 with a hunting rifle. He had abused her and driven their son to suicide. After an outcry over her treatment, François Hollande, then the president, gave Sauvage a full pardon.

Bacot’s growing band of supporters would like her to be pardoned too. “Even though she committed murder by killing her torturer,” their petition says, “given the 25 years of suffering she endured to general indifference, it is her freedom that we ask for.”

The campaign — together with Bacot’s highly unusual step of writing a book in effect justifying her actions — may not go down well with the court, however, and Bacot herself seems reconciled to her impending punishment.

“I am looking forward for this to end, to finally know what is in store for me,” she told Le Parisien. “I have done my job, fulfilled my role as a mother; now I can go to prison with peace of mind.

“I deserve to be jailed for a very long time. This trial is not only mine, it is also that of ‘the other’” — the term she uses for Polette, whose name she cannot bear to say out loud. “I hope that I can be stronger than him and for once in my life win against him.”

Peter Conradi is the author of The Red Ripper and Hitler’s Piano Player