A blonde Danish teenager has murdered her mother after watching multiple sickening ISIS videos, which include the beheadings of British hostages, has been jailed along with her older jihadi lover. Lisa Borch was only aged 15 in October last year when she spent hours on YouTube watching footage of the barbaric decapitation of David Haines and Alan Henning. Afterwards she and her radical Muslim boyfriend, named Bakhtiar Mohammed Abdulla, took a long-bladed kitchen knife and proceeded to stab her mother at least 20 times at the home they shared. [Borch] became obsessed with militant Islam after falling in love with...