Margaret White can't get a knife out to prepare a meal without thinking of the last moments of her two brothers, who were viciously stabbed to death by a man dressed in women's clothing.
Giuseppe Di Cianni, 66, was found guilty earlier this year of the double murders of Albert and Mario Frisoli in 2009.
His former lover Josephine Pintabona, 54, has been found guilty of being an accessary after the fact.
During the pair's sentencing hearing on Friday, Frisoli family members broke down as they remembered the brothers.
"There is a permanent void that exists within me," Ms White told the Supreme Court.
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"Each day is a struggle and I am unable to be a contributing member of society.
"Every time I draw a knife from the kitchen to cook a meal I am reminded of their last moments."
Mario's daughter Shannon Frisoli told the court she wonders every day why she has to live her life without a dad.
"Dad, I miss you everyday and I hurt everyday."
The courtroom was packed with family and friends of the victims as the crown prosecutor Mark Hobart SC recommended a life sentence for Di Cianni and described the murder as "savage in the extreme".
The trial, which began last April, has heard there was a history of animosity and violence between Di Cianni and Albert Frisoli, whose once-friendly business relationship began deteriorating in 2000 and became marred by court disputes and restraining orders.
Less then a month before the brothers were murdered, Di Cianni's court case against Mr Frisoli collapsed, leaving him with hundreds of thousands of dollars in legal fees.
Di Cianni dressed up in women's clothes and entered the Frisoli brothers' home in Rozelle on May 6, 2009 where he first stabbed 52-year-old Mario Frisoli 21 times.
He waited for Albert Frisoli, 56 - stabbing him 27 times when he arrived home two hours later.
The sentencing hearing continues.
