Chilling Facebook posts show how an Australian accused of decapitating her mom was obsessed with horror films, including the blood-filled “Texas Chainsaw Massacre.”

Jessica Camilleri, 25, said that violent flicks such as “Jeepers Creepers” were her “favorite movies in the world.”

Jessica has been accused of attacking her mother in the kitchen of their Sydney home late on Saturday night, before dropping the 57-year-old’s head in front of a neighbor’s house.

Her mom, Rita, had been babysitting a child at the time of the attack.

When cops arrived at the gruesome scene, Jessica was standing calmly in the driveway, covered in blood.

Officers wrapped her hands in plastic to preserve forensic evidence.

One of her friends, Cathleen Day, told Daily Mail Australia that Jessica suffered “major mental [health] issues, but Rita always supported her.”

Love of horror

Her fascination with horror movies appears to have spiked prior to Rita’s death, reports 7 News.

In one Facebook post, from July 18, Jessica uploaded a picture of “Jeepers Creepers” – about a flesh-eating demon which devours people to replace its own old or damaged body parts.

She said “interesting story”, just after 3am, to which her mom replied: “Yes, interesting indeed.”

Earlier that day, Jessica changed her profile image on Facebook to a spooky grey-filtered photo, before she was due in Parramatta Local Court on a different matter, says news.com.au.

Her doting mom responded with a love heart emoji, prompting Jessica to reply with a picture of a woman blowing a kiss, as she said “Thank you mom oxox.”

In a 2017 post, she uploaded pictures from “Jeepers Creepers” and “Texas Chainsaw Massacre”, saying that such horror movies were her “favorite movies in the world”.

‘Horrific attack’

New South Wales Police said that officers were called to a property at about 11.40pm (local time) on Saturday after reports of an argument between two women.

Cops found Rita’s body inside the home, and her daughter was arrested in the front yard of a neighbor’s home, and taken to St Mary’s Police Station.

A shaken Nepean Police Area Commander, Det Supt Brett McFadden, said: “While police are trained to respond to all types of situations, there’s no getting away from the fact this was a horrific attack.

“This is up there with one of the most significant, most horrific scenes police have to deal with.

“Detectives are now working meticulously through the information available to us.

“But it’s a very difficult and challenging investigation. It is also in its very early stages and as you’d understand, there is still a long way to go in this inquiry.

“Police officers attending the scene have been offered professional support.”

Det McFadden said the family was known to the force, but Saturday night’s murder was “not foreseeable”.

Several crime scenes have been established inside the family home.

He said that Rita had suffered “extensive injuries. We understand at this stage that a number of knives were used during the course of the incident.

“I am not able to specify what kind of knives they were at this stage. They both reside at the home together.”

He confirmed that a young boy at the crime scene was taken to Westmead Child’s Hospital with a minor head injury, and is now being cared for by his family.

Det McFadden said: “The family is distraught as to what has taken place.”

It’s alleged that a “number of knives” were used to kill the victim and cut off her head, before it was dropped outside a neighboring property.

‘Violent argument’

Cops allege that Rita was killed by her daughter in the kitchen of their family home, where they both lived, before the 25-year-old carried her decapitated head two houses along the road.

Neighbors had rushed to help Rita after hearing a “violent argument” but were instead confronted by the woman’s head on the footpath.

Officers rushed to the street and later found the rest of her dismembered body in the kitchen.

One neighbor told 9News that Rita and Jessica “had a good relationship”.

Another resident, Ali Bostani, told the broadcaster that he heard someone call: “Help, help, help” before there was a knock at his door.

Jessica asked him to phone the police or ambulance, saying that she had fought with her mother.

He described Rita as a “lovely lady. I feel sorry for her because she was so nice.”

First court appearance

When Jessica appeared in Parramatta Bail Court yesterday, after being charged with murder, her lawyer said that she has significant health issues.

The woman – appearing via video link – told the court she had been injured during the attack, and was unable to wash herself properly to “get all the blood off” because she was unable to move her fingers properly.

Jessica told the magistrate she had a number of conditions including border autism, bipolar disorder and anxiety. She asked to be taken to a hospital to receive treatment.

Magistrate Michael Price made an order for her to be assessed in a hospital before her next appearance.