Lori Vallow Daybell, the doomsday cult follower who killed her two children, has been sentenced to two additional life sentences for plotting to kill her estranged husband and her niece’s ex-husband.

At her sentencing hearing in Arizona on Friday, Daybell’s family members described in court how she victimised them and their disgust.

“You are a manipulator, a parasite and a coward,” she was told by Kay Woodcock, the grandmother of her murdered son.

Daybell had already been sentenced to life in a separate trial for killing her son Joshua “JJ” Vallow, 7, and daughter Tylee Ryan, 16. The latest sentences are for plotting to kill ex-husband Charles Vallow, and ex-nephew Brandon Boudreaux.

Her only-surviving son Colby Ryan was among those in court on Friday. He memorialised his father Charles Vallow, who “took care of our family, and he made sure we had a good life”.

Speaking to her mother, he said it “must be a very sad life to smile your way through all the pain you’ve caused”.

“Rather than being able to acknowledge the pain that she has caused, she would rather say that Charles, Tylee and JJ’s deaths were a family tragedy and not her evil doing,” he said.

“Quite frankly, I believe that Lori Vallow herself is the family tragedy.”

Larry Woodcock, the grandfather of JJ, also lashed out, at times yelling at her.

“You murdered Charles, the best thing that’s ever happened in your life, for your delusional, narcissistic ways,” he said.

“I will never speak your name again, murderess. You are nothing.”

Daybell was found to have conspired with her brother, who died of natural causes in 2019, to murder her ex-husband and cash in on his life insurance.

Officials say she also conspired to kill Brandon Boudreaux, who narrowly avoided being shot in the head outside his home.

During trial, she argued that her late brother killed her former husband in self-defense.

The so-called “Doomsday Mom” represented herself during trial, despite having no legal experience.

Chad Daybell, her current husband, is awaiting a death sentence in Idaho for the deaths of the two children, and his wife from the time when his affair began with Lori Daybell.

Chad Daybell is an author who has written several apocalyptic novels loosely based on Mormon religious teachings.

The murders were committed as part of the couple’s bizarre belief that people in their lives had come to be possessed by evil spirits.

The sentencing on Friday comes at the end of her third and final trial.

The case has gripped the US, after the two children went missing, along with Daybell and her husband. She was later arrested in Hawaii and the children’s bodies were found on a property belonging to her husband in Idaho.