Desiree and Ntombikayise Ndebele have remained in custody to allow the attorney to verify their legality.
The women are facing two charges each, murder and defeating the ends of justice. They appeared in court on May 17.
The accused allegedly murdered the six-year-old Ryan Mutinzi and dumped his body in a bag in Bellavista.
The case was postponed to May 24.
WATCH: Prayer vigil for boy (6) found dumped in Bellavista