03/24/2017 12:14 EDT | Updated 03/27/2017 02:04 EDT

Daphné Boudreault Accompanied By Police Officer When She Was Murdered, Says Father

Daphné Boudreault was stabbed to death on Wednesday.

The father of a Quebec woman allegedly murdered by her ex-boyfriend has revealed more information about how she died.

Éric Boudreault told Radio-Canada that his daughter Daphné was accompanied by a female police officer and her stepmother Wednesday when she went to pick up her belongings from the apartment that she and her ex had shared in Mont-Saint-Hilaire.

Daphné went into the apartment first but was stabbed as soon as she entered, Éric told the broadcaster. The attack happened quickly, he said. The police officer had already subdued and handcuffed the attacker by the time his wife was in the apartment.

The 18-year-old died of stab wounds at the scene, according to provincial police. But officials have yet to verify her father's version of events.

Daphné Boudreault was murdered on Wednesday, allegedly by her ex-boyfriend. (Photo: Daphné Boudreault RIP/Facebook)

Daphné's ex-boyfriend, Anthony Pratte-Lops, has been charged with first-degree murder in her death.

"For the past month, she's been trying to break up with him, but he had threatened to kill himself," Éric told CBC News.

Shanon Meilleur, who worked with the woman at a convenience store, told the Montreal Gazette he harassed Daphné on the phone at work and disclosed to other coworkers they physically fought.

“She wasn’t allowed to have friends,” she said.

The couple had been together for two years, according to TVA Nouvelles, before Boudreault broke up with him.

She spent Tuesday night at her father’s place instead of the apartment they shared, but when she went to her car to go to work on Wednesday, Pratte-Lops was inside.

They drove to the convenience store, where a scared Boudreault asked her co-workers to call 911. At least four cops arrived on the scene.

But they determined that Pratte-Lops wasn’t a threat and called him a cab to go home, according to the Gazette.

“She was curled up in a ball and bawling her eyes out,” Meuilleur said of her coworker.

Daphné Boudreault was in "major distress" about her safety the day she died, said a coworker.(Photo: Daphné Boudreault RIP/Facebook)

“She said, ‘Does he have to kill me before police do anything?’ She was in major distress.”

Coworkers told TVA Nouvelles the police denied Boudreault’s request to have a cop accompany her to the apartment, saying it would affect the man’s reputation.

However, a police officer did follow her and arrived at the scene a few minutes after the attack, the broadcaster reported. They don’t cite a source for this information.

Quebec’s Bureau of Independent Investigations said Thursday it plans to launch a probe into how police handled the woman’s murder.