Use age-appropriate language. As the child matures, you can explain the separation in more sophisticated ways. Be prepared to explain the separation to the child again and again
Gwiritsani ntchito chiyakhulo choyenera ndi msikhu wake. Pamene mwana akukula, mufotokozeleni zakusiyaniku mwatsatanetsatane. Khalani okonzeka kumufotokonzera mwana zakusiyanaku mobwelezabweleza.