Giulia Stanganini, after murdering her son with a knife, went on to kill Loredana Stuppazzoni, whose body she then dismembered and hid.
The Court of Cassation upheld the appeal sentence as judges declared the woman semi mentally infirm.
Initially, she had been sentenced to life imprisonment and had been recognised as capable of understanding.
More recently, an expert psychiatric assessment concluded that she was capable of understanding at the time of the murders and partially insane when she cut her mother into pieces.
ANSA
