By last October, Danish court heard, the baby-faced teen had enough and, after binge-watching ISIS beheadings on YouTube, she and boyfriend Bakhtiar Mohammed Abdulla took a long kitchen knife and stabbed Tina Romer Holtegaard 20 times in her bedroom.

Borch became obsessed with militant Islam after falling in love with a Muslim man who left her, then she met Abdulla at a nearby refugee center.

Borch’s stepfather, Jens Holtegaard, said she was a strong supporter of IS and he anxious her nine-year sentence could further radicalise her.

The pair had been planning to flee to Syria to join ISIS, a judge was told.

“Please come here, there is blood everywhere”, – this call was made to police after she killed her mother.

When police arrived they found Mrs. Holtegaard dead and the teen quietly playing with her cell phone. The unconcerned teen, showing no emotion, simply pointed upstairs when asked where her mother’s body was, which immediately made her the prime suspect, reported the Daily Mail.

After brutally killing her mother, Borch called the police.

The arguing stemmed from Holtegaard telling Borch to break up with Abdulla, who Borch now claims is only a friend, telling her to ‘live the life of a normal teenager.’ Prosecutors believe the arguing led to the murder.

The teenager used to have arguments with her mother over her relationship with the 29-year-old who was nearly twice her age.

Preceding the murder of her mother, the teen Borch was on YouTube reportedly viewing the ISIS beheadings of British hostages David Haines and Alan Henning carried out by the notorious ISIS terrorist, Jihadi John.

After Borch received her nine year sentence, Abdullah was condemned to 13-years in prison and immediate expulsion from Denmark after his sentence is up.

“This murder was cold blooded, ice cold and committed in a bestial manner”, state prosecutor Karina Skou told the court.

The court could not determine which of the pair delivered the fatal stab wounds, and both were found guilty of the murder.

Borch’s twin was in court to see her sister sentenced but did not look at her during the trial. She also said that, at one point, Borch showed her a knife she claimed she was going to use to kill their mother.

‘Lisa is completely uncritically enthusiastic about everything related to the immigrant community.

However, her sister had dismissed it as a joke. ‘I dare not imagine what she can develop into during imprisonment.’

“There is no doubt that she was in very bad company when she began to hang out with him”.

Prosecutors told the court that Ms Borch had planned to travel to Syria to flight alongside ISIL.