Jayde Rhiannon Wallis, 29, stabbed her mother four times in the chest and body on January 16 before calling triple-0 to say she thought she had killed her, the Supreme Court has heard.

The mother, 44, spent two days in hospital after the attack in her Spring Gully home.

One stab wound missed her heart by one millimetre.

Senior Crown Prosecutor Peter Rose, S.C, said Wallis' violent outburst was prompted by a "practical joke" text message.

He said Wallis' aunty had sent her a message falsely stating that her great grandmother, who raised Wallis as a child, had died.

The court heard Wallis had gone to her mother's house just after 4am on January 16 and forced her way in by breaking a screen door. She had a cooler bag with her containing a knife, a skeleton mask, and several beer cans.

Mr Rose said Wallis sat next to her mother on the couch before "launching herself onto the victim and stabbing her near the heart".

The court heard Wallis immediately called an ambulance and told the call operator "I think I've killed my mum… I stabbed her in the heart. I didn't mean to kill her."

The mother suffered wounds to her chest, arm and abdomen, and had a pierced lung where the knife narrowly avoided her heart.

Wallis was originally charged with attempted murder but the charge was withdrawn after she pleaded guilty to aggravated burglary and intentionally causing serious injury.

Defence counsel Jarrod Williams said Wallis had a complex history of conflict within her family. He said the text message about her great grandmother affected her mental state.

Wallis’ mother was 15-years-old when she gave birth to her. She was placed into foster care and later lived with her great grandmother.

Mr Williams said Wallis suffered long-term mental health issues and alcoholism. At the time of the offending she was working as a sex worker.

Mr Rose said the prosecution had taken into account her “horrible history” which would be factored into the length of her jail sentence.