Amirah Droudis, the girlfriend of Sydney siege gunman Man Haron Monis has been sentenced to at least 44 years in jail for the murder of Monis' ex-wife.
In April 2013, the body of Monis' ex-wife, who can only be identified as Helen Lee, was found stabbed 18 times and set alight in the stairwell of an apartment complex in Sydney's west.
Droudis, 37, was charged with murder and Monis was charged with being an accessory before and after the fact to the murder.
"There was ample time on the day of the murder for the offender to withdraw from the attack, but she did not do so," Supreme Court Justice Peter Johnson said on Wednesday, before handing down a sentence of 44 years with a non-parole period of 33 years.
"This was a brutal and callous attack on a defenceless woman."
Johnson said it was Monis who masterminded the attack after a family dispute, and that Droudis had become "enthralled" by him.
"This was a hot-blooded and frenzied murder by an enraged female attacker," he said in his judgment.
"This crime had all the hallmarks of a frenzied attack by an angry amateur killer, acting in a manner consistent with Monis' desire."
Droudis' lawyers said she was repeatedly assaulted by Monis during their relationship.
Monis was killed during a confrontation with police 17 hours into a siege at the Lindt Chocolate Cafe at Martin Place, Sydney in December 2014 in which two hostages died.
Gina Rushton is a breaking news reporter for BuzzFeed News and is based in Sydney.
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