This is the best summary I could come up with:

Girl X and boy Y, who cannot be named due to their age, had blamed each other for the killing but were convicted of her murder at Manchester Crown Court.

Brianna, who had thousands of followers on TikTok, was in reality a withdrawn, shy and anxious teenager who struggled with depression and rarely left her home.

On the day of her death, Brianna was lured to the park by girl X before being attacked with a hunting knife in broad daylight, suffering stab wounds to her head, neck, chest and back.

The jury heard girl X admitted to police that she enjoyed "dark fantasies", but claimed to have no intention to ever turn them into reality, while boy Y said he went along with them and did not take them seriously.

Speaking outside the hearing, deputy chief crown prosecutor Ursula Doyle said girl X and boy Y had been "a deadly influence on each other and turned what may have started out as dark fantasies about murder into a reality".

Cheshire Police's Det Ch Supt Mike Evans said it became clear early on that the pair believed they could cover their tracks.

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So broken at such an early age, you wonder how easy it will be to rehabilitate them. They've had variable success with the killers of James Bulger.