Emergency services were called to Capital Karts a week ago (Credit: Google Maps)
The teenager was injured during an incident at Capital Karts, in Ripple Road, shortly before 2.25pm on Friday, 6 August.
The London Ambulance Service sent an air ambulance and paramedics to the area.
They treated the girl at the scene before taking her to a major trauma centre for further treatment.
She sadly died in hospital four days later on Tuesday, 10 August.
Officers are liaising with health and safety officials from the local council.
They are continuing to investigate what happened.
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