The mother of Jade Young, the stabbing victim of Bondi, described her daughter’s murder as a “nightmare thing” as a result of “years of neglect” in the mental health system.

Elizabeth Young told the NSW coroner’s court on Thursday that her words were “both a manifestation of distillation and pain”.

Her loving, smart, compassionate, considerate and "a little stupid" daughter, she said, "no longer has the chance - to exist in the future."

"I got lost at the age of 74." "The moment he casually dropped that knife into the jade, our ordinary life was broken."

Young is accompanied by her husband Ivan, son Peter and Jade's husband Noel. Elizabeth Young's dog Teddy is also under investigation. Family statement was issued on the final day of the five-week coronavirus survey.

Joel Cauchi, a 40-year-old schizophrenia man, killed Ashlee Good, 38-year-old Yixuan Cheng, Pikria Darchia, 55, Dawn Singleton, 25, Faraz Tahir, 30 and Jade Young, 47.

Elizabeth Young remembers smiling with her daughter for a blanket, sending her a picture of the perfect mushroom ring and the last emoji in the days before her murder.

During the attack, Yu shops with her daughter. Elizabeth said her granddaughter later painted the "place where the mummy fell" in the blue crayon.

"Stop and think," she told the court.

Young described the coronavirus investigation as “painful” and said: “Some people cannot see the true facts of the deaths of six people”.

She said the accumulation of years of failure led to the murders of Kuch.

She said Australia “doesn’t seem to want to admit that what happened is… years of neglected in our mental health system”, at the state and federal levels. “My daughter was murdered by an unmedicated chronic schizophrenia.”

She refers to senior lawyers who assisted coroner Peggy Dwyer SC, saying:

"I'm sorry, in my opinion, my daughter and five other people were killed by a cumulative number of people in a series of error-making systems," she said.

Young said if the investigation leads to increased mental health funding and arranges better safety arrangements, “everything is good, but my daughter, my lovely, gentle daughter is no longer.”

"For me personally, this investigation is of no benefit. She has no meaning to him, no comfort closure, no way to make modifications to everything he has obtained from me."

The Coroner's court heard that Elizabeth Young could not stand the loud place, shrunk, easily frightened, stopped listening to music, or had flowers at home, slept badly, and was anxious about social occasions and Saturday afternoon's "fear."

She also criticized some members of some media for reporting on the incident and reported it in the commemoration less than two weeks later.

Young told the court that images of Jade's body were widely shared after the attack. Thinking about an image of a woman lying dead is “disgusting me”, she said Thursday. “I learned a new phrase in the days after April 13 – trauma porn.”

Peter Young, who lives in Hobart, said his sister Jade was murdered by a man who "helped for not finding a good girl to marry a marriage--what a coward".

Jun Xing and Pengfei Cheng's barrister Daniel Roff SC read a statement on their behalf. Yixuan Cheng is their only child.

Her students in Sydney were "thriving" the court heard Thursday. "We talk to her almost every day and are very proud," the parents said.

The last time they saw her was a month before her death.

“She is the perfect person, no one parents want or need more,” Rove said as he read their statement.

On the day of the attack, Yixuan Cheng talked to his mother over the phone. “I told her she and her father loved her () She told me she loved us.

"Ixen is a treasure of our life...we age overnight and our hair turns gray," the couple said in a statement. "We never had the chance to tell her that being a mother and father is the greatest gift."

Muzafar Ahmad Tahir, brother of Pakistan's country Faraz Tahir, said the brothers who moved to Australia brought a "sense of security".

"The country is very peaceful and provides many facilities for a better future," he told the court. "None of us can imagine that such a tragedy might land on him."

Faraz Tahir was working as a security guard in the Westfield Bondi community at the time of the attack.

"His courage makes us very proud ... He will always be remembered as a symbol of heroism," his brother said, adding that it was a great sense of pride when the Prime Minister called Faraz a "national hero."

Pikria Darchia's eldest son, George Darchia, published a statement read in court.

His mother is "quiet but full of depth, staring, kind, strong...the person who turns the world to the way she wants it".

The court heard she had a dream that one day George and his brother would live with her in Sydney.

"She likes the city, she believes in the city...but I haven't come. Now, I'm enduring the pain of this choice."

"Maybe I could have helped her avoid going to Bundy Junction on that fateful day. It's not a logical ingui, it's more in-depth."

The attack has only been over a year and the investigation was adjourned on Thursday.

It examines the potential failure of Kuchi Healthcare, the preparation of shopping malls where armed criminals are on the scene, and the responses of police, ambulance services and media.