A mother not only suffocated her son and let him swallow a battery but also drugged her daughter so she could repeatedly take them for emergency medical check-ups, Crown prosecutors say.
The woman, whose name is suppressed, is standing trial in the High Court at Auckland, facing nine charges of ill treatment or neglect of a child.
Opening the Crown case on Monday, prosecutor Melissa Hammer said the abuse of her two young children spanned close to five years, beginning from 2011.
It was then the mother started taking her first born daughter for medical check ups, claiming she was suffering an array of ailments, such as fever, rashes and diarrhoea.
But with medical experts unable to discover what was wrong, the woman began to claim her daughter was suffering more serious conditions, such as seizures and ataxia, whereby a person loses control of their limbs.