On September 14, after stealing petrol from a BP in Mt Wellington, she and another drove to the Lagoon Leisure Centre in Panmure.
The pair parked their car next to Voon.
Pritchard-Davis' co-offender threatened Voon with a screwdriver and stole her bag, before the girls dragged her into the car park where she was punched twice to the head and kicked.
Judge Ema Aitken said when police caught up to the teen, she claimed she had no fear of being sent to prison because it would gain her "notoriety amongst [her] friends, it makes you famous amongst your friends".
During sentencing, Pritchard-Davis could be seen seemingly smirking as the judge outlined the details of her crimes. However, as the proceeding progressed the teen's expression grew increasingly forlorn.
Pritchard-Davis will spend four years and two months behind bars.
She was sentenced on two counts of aggravated robbery, 14 counts of burglary, two counts of attempted burglary, three counts of unlawful taking of a motor vehicle, three counts of unlawful possession of a motor vehicle, theft, assault, aggravated assault against a police officer, resisting arrest.
Those sentences include one count of unlawful taking of a motor vehicle and one count of unlawful possession of a motor vehicle, in relation to the incident involving Voon.