Women, Children and People with Disabilities Minister Lulu Xingwana has also asked that the defendant be denied bail to send a strong message that there is no acceptance of abuse, SAnews.gov.za reported.
The 23-year-old suspect, who has not been identified, allegedly raped the young girl before killing her.
"There is something fundamentally wrong with the foundation of our society when women and children are made to live in terror even in their own homes. Domestic violence is a social evil that must be uprooted from our communities," she said.
The suspect appeared briefly in court Tuesday and the case was continued until Monday.