Mum Annemarie Theron set up a hidden camera after she noticed bruises on her nine-month-old daughter Laila's neck, shoulders and under her feet.
Footage captured at her home in Namibia appears to show the family's nanny manhandling the tot, tossing her into her cot like a rag doll.
Devastated mum Annemarie told Netwerk24 : "It was very emotional watching it. I refused to sleep, eat or drink for a couple of days afterward.
