Testifying on the last day of the commission's Durban hearings, Lephina Zondo also told how police had burst into her home during a memorial service for her son, beating mourners and destroying furniture.
Two children attending the service were later shot dead when they left the house.
"I would request the commission to replace the furniture as it belonged to the church. We also don't have a death certificate," she said.
Johan Smit, the father of eight-year-old Cornio Smit who died in the blast, told the commission's Johannesburg hearings last week that he had forgiven Zondo for his son's murder.