Woman fatally ‘stabbed her 11-year-old daughter to death to prevent her from having sex with multiple men.

A woman from Orlando has been accused of fatally stabbing her 11-year-old daughter more than a dozen times, and killing the child in the process because she wanted to “prevent her from having sex” with multiple men.

Rosa Alcides Rivera, 28, was arrested Sunday morning and charged with first-degree murder in the death of the daughter, Aleyda Rivera, after she drove up to an Orlando hospital with her already dead child in the front passenger seat, authorities said.

Rivera, who told first responders “my baby is gone,” was detained by hospital security when she pulled out a bloodied knife, the Orlando Sentinel reported.

According to authorities, the child had suffered 15 stab wounds to her back and a defensive wound to her right arm.

“These cases are horrific and tragic,” Orange County Sheriff John Mina told reporters during a Monday press conference.

“And then to know that the child was killed by a mother basically, a mother is the first line of defense to what is sometimes a very cruel world is very hard on all of us,” Mina said.

Police officials said that before Rivera stabbed her daughter, she took the child to a Citadel Drive home, where she accused her mother’s boyfriend of having sex with the girl.

Rivera said she believed her daughter was having sex with men because she “smiled different,” according to an arrest affidavit, ClickOrlando.com reported.

Witnesses told investigators that the girl denied having sex, and Mina said authorities do not believe that the child was sexually abused, according to the news outlet.

“Based on what we know and what we’ve found so far, we believe that part to be false,” Mina said. “We are doing everything we normally do in those types of allegations, investigations, to unfound that completely.”

Rivera also told cops that she attempted to make her daughter “comfortable” while she was stabbing her to death, according to reports.

Detectives believe that Rivera knifed the child inside the car and then drove the victim “around in her vehicle until she ultimately died from those stab wounds,” Mina said, according to the Orlando Sentinel.

According to NY POST, River is being held without bail in the Orange County Jail.