Danish 15-year-old Lisa Borch murdered her mother in October of last year after watching YouTube videos of ISIS beheading British hostages and now she’s going to jail for it.

Borch and Iraq-born boyfriend Bakhtiar Mohammed Abdulla, 29, stabbed Tina Römer Holtegaard at least 20 times with a long blade kitchen knife in their home of Kvissel, Denmark. 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. The two had plans to flee to Syria to fight for ISIS.

After the murder Borch called the police saying, "I heard my mother scream and I looked out the window and saw a white man running away. Please come here, there is blood everywhere." But when police arrived at the house, Borch was calmly sitting in the living room, using her iPhone, and watching videos on YouTube. She didn’t even get up from her computer when police asked her about her mother, she just pointed them upstairs where they discovered Holtegaard in bed covered in her own blood.

Police later examined the computer and found Borch had been watching beheadings on repeat.

During Borch’s trial it was learned Borch's twin sister had just moved out, no longer able to deal with the constant arguing between Borch and their mother. 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. One time Borch even showed her sister which knife she was planning on using to kill their mother, but Borch’s sister thought it was a sick joke.

In court Borch and Abdulla blamed each other for the murder but both got sentenced. Borch will serve nine years in jail and Abdulla will serve 13 years and will be expelled from Denmark afterwards.

[via Daily Mail]