Rebecca Moore, 25, claimed to be 'Lauren Smith' when she was first cornered by cops in connection with Sacad Ali's death, who was stabbed to death with machetes.
But her cover was blown when they identified her from a photo and she was then heard on body-worn footage crying "no, no, no" as she was handcuffed by police.
Moore was later found guilty of murdering Sacad on November 11 after a 16-day trial at Sheffield Crown Court.