The incident happened at around 4.45pm.
Cheryl died on the scene, while Jarrett, who was a Grade Eight pupil at St Dunstan’s College, died in hospital.
The two occupants of the bakkie are also believed to have died.
Kaiden, a Grade Six Rynfield Primary School pupil, and his dad were, on Monday, recuperating in the Medicare Hospital.
Jacques’ father, Tony, told the City Times his son had undergone a successful operation on Saturday, as a result of a fluid build-up in his stomach.
Kaiden sustained a fractured vertebrae and collarbone.
