A Sydney woman who killed her children with rat poison has been found not guilty of murder, but guilty of manslaughter.
The woman pleaded not guilty to murdering her children by reason of mental illness.
She gave her three-year-old daughter and four-year-old son rat poison before smothering them in February last year.
In letters written at the time she blamed her husband's affair for her actions and claimed to be protecting her children by taking their lives.
At her judge-only trial the prosecutor dismissed arguments by the woman's lawyers that her depression was so severe that it made her incapable of distinguishing right from wrong.
But in finding her guilty of the lesser charge of manslaughter, the judge ruled her actions were impaired by an abnormality of the mind.