Logan MacPhail, now 17, knifed Holly Newton 36 times in an alleyway after stalking her for an hour through a town centre last January.
He denied murder but admitted manslaughter, claiming he blacked out, but was convicted following a trial at Newcastle Crown Court.
Earlier this month, the judge lifted a reporting restriction preventing the media from identifying the teenager.
Holly's grieving mother, Micala Trussler, made a moving victim statement at the start of a two-day sentencing hearing yesterday, watched by MacPhail via a videolink.
Enormity
The mother of four said she raced to the scene of the tea-time attack in Hexham, Northumberland, frightened of what she would find - but was met by a more horrific scenario than she had imagined.
Micala told the hearing: "The enormity and severity cannot be put into words.
Denne historien er fra November 01, 2024-utgaven av Daily Express.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra November 01, 2024-utgaven av Daily Express.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
Leaders inspire Kulusevski to a personal best
DEJAN JUST LOVES SHOT AT GUARDIOLA'S GREATS
'Crazy' to leave breast tissue behind, jailed surgeon tells inquest
Consultant was 'nightmare' to work with
421 come forward over AI Fayed abuse claims
MORE than 400 people have contacted lawyers over allegations of sexual misconduct against former Harrods owner Mohamed AI Fayed.
Prison worker admits having a relationship with Zara's murderer
A PRISON workshop instructor has admitted having an inappropriate relationship with the murderer of aspiring lawyer Zara Aleena.
Trump rubbishes Biden's garbage comments
DONALD Trump pulled on a hi-vis jacket and jumped into a dustcart to hit back at Joe Biden for calling his supporters \"garbage\".
Lebanon optimistic of striking ceasefire deal
A CEASEFIRE between Hezbollah and Israel could be announced within days, Lebanon's caretaker Prime Minister said yesterday.
Long and painful journey to apology over Ella's death'
Government pays up after air pollution kills girl, nine
'Holly was a crime scene...I was unable to even hug her'
THE mother of a 15-year-old girl murdered by her obsessed ex-boyfriend has spoken of her anguish at being unable to touch her in hospital because she was a \"crime scene\".
'I had a devil of a time after big Prada role'
THE Devil Wears Prada star Anne Hathaway has revealed the film helped her sharpen her style to a fine point - as it made designers flock to her.
'We were Gavin a nightmare filming Christmas special'
Star Alison: Nosey fans were everywhere