A Melbourne woman accused of stabbing her ex-husband to death was depressed at the time of the murder, a court has heard.
Renee Nolan, 70, appeared before the Victorian Supreme Court via video link on Friday after earlier pleading not guilty to murdering Harold Nolan due to mental impairment.
Mr Nolan's body was found by police in a bed at a Mitcham unit on October 24, 2016.
"It's an unusual mental impairment because it's depression with psychotic features," her barrister Rebekah Sleeth told the directions hearing.
Nolan pleaded not guilty to murdering her husband on Wednesday at a committal mention at the Melbourne Magistrates' Court.
The prosecution on Friday said they are waiting for Nolan to be examined by a second mental health expert.
Once they review a report about her state of mind, prosecutors will then decide if they want to contest or consent to a mental impairment defence.
Justice Lex Lasry remanded Nolan into custody to return to court on June 16 for a further directions hearing.