Emergency services Netcare 911 and ER24 arrived on the scene where they found two light motor vehicles which collided.
Four people, among them two teenagers between the ages of 13 and 16, were still alive and injured.
A friend of Bühner and her five-year-old child were among the six who tragically died in the accident.
Chris Botha, a Netcare 911 spokesperson said paramedics and their rescue unit arrived at the scene and found the roadway obstructed with accident debris and the twisted frames of the vehicles, one of the wreckages was engulfed in flames with three people still trapped in the wreckage, which was later extinguished by the fire services.