Erica Pereira da Silveria Vicente confessed to killing partner Everton Amaro de Silva in Minas Gerais, Brazil — saying she was just trying to protect her 11-year-old daughter from being raped, according to Estado de Minas.

She was alerted by alarming texts the predator sent the preteen — then found him on top of her, trying to rape her, when rushing to her screaming daughter, according to the reports.

However, prosecutors insisted that the brutality of the murder proved it was carried out “not in blind rage but with cold premeditation.”

The mom allegedly spiked de Silva’s drink with Klonopin, a medication used to treat seizures, and then stabbed and clubbed him while he was unconscious, according to prosecutors.

A teen who heard screams helped the mom carry the body to wasteland in Belo Horizonte — where Vicente cut off the dead man’s genitals and set fire to his body, jurors were told.

Cops linked Vicente to the killing after following a trail of blood to her Belo Horizonte apartment and she handed over the knife.

She confessed to the killing — but insisted it was only to save her daughter.

The jury agreed, and the mom was acquitted Tuesday of aggravated homicide and destroying a corpse after just one day of testimony.

The mom — who had already spent a year behind bars awaiting trial — was cleared by the judge of any wrongdoing.