A young woman who stabbed her ex-boyfriend to death while they were having sex because she “wanted to kill someone” has been allowed to leave prison for good behaviour after having served just six years of her already short sentence.

Vania Basilio Rocha was 18 years old when she fatally stabbed her ex-boyfriend, 26-year-old Marcos Catanio Porto, 11 times while they were having sex at his home in the Brazilian city of Vilhena in December 2015.

The pair had been together for nine months and had separated two months prior to the fatal incident, with the suspect later telling the police: “I wanted to kill someone. I don’t regret it.”

The young woman was diagnosed with antisocial personality disorder and was sentenced to 13 years in prison for the crime, with her sentence reduced to just eight years and four months in 2017 following a successful appeal.

Now 24 years old and having served just six years in prison, the Court of Justice of Rondonia has ruled that she can now complete her sentence in a semi-open regime following another successful appeal. The court cited her good behaviour in prison as the motive for its decision.

The decision means that she can now leave prison during the day with an ankle tag, though the court stipulated that she must continue to receive psychiatric and psychological treatment outside of prison, and she must continue to take her medication.

The court said that her mother will be responsible for monitoring her outside of prison, and that if she breaches the conditions set by the court, she will be returned to a closed regime.

Following her crime, the young woman revealed that she had made a shortlist of three potential murder victims that also included a friend and another man she was dating before she eventually opted for her ex-boyfriend.

According to local media, she received judicial authorisation to marry a man who was also serving time in another prison in 2019, and she wore her prison uniform at the wedding.