Lori Vallow is appealing her murder conviction

Lori Vallow's defense attorneys have appealed a month after she was sentenced to life in prison for the murders of her two children and her husband's former wife.

In May, after a grueling trial lasting weeks, the so-called “doomsday mom” was found guilty of killing 7-year-old Joshua “JJ” Vallow and 16-year-old Tylee Ryan. Their bodies were found buried in her husband Chad Daybell's backyard in Rexburg, Idaho.

She was also found guilty of conspiring to murder her husband's former wife, Tammy Daybell.

Vallow married Daybell in November 2019, less than two weeks after his wife Tammy died of what appeared to be natural causes. Her body was later exhumed and found to have died of asphyxiation.

Lori Vallow can be seen in a mug shot taken in Idaho after her sentencing

(Idaho Department of Corrections)

This photo of Tylee Ryan and her brother Joshua “JJ” Vallow with their uncle Alex Cox was taken days before she was murdered

(handout)

The Vallow case drew national attention when Vallow's children went missing in September 2019. Nine months later, their bodies were found buried in Mr Daybell's backyard in June 2020.

They were both charged with murder and conspiracy to kill their children, as well as conspiring to kill Tammy, and after three years of delay and weeks of harrowing testimonies, Vallow went to trial in May.

JJ, who had autism, had been smothered with a plastic bag taped over his face, his small body still clad in red pajamas. Tylee's cause of death has since become unclear as the teenager's dismembered, charred bones and body parts were found scattered in the ground at Mr. Daybell's pet cemetery.

This bizarre spate of disappearances and deaths came just months after Vallow's fourth husband, Charles Vallow, was shot and killed by Vallow's brother, Alex Cox, in Arizona in July 2019.

Arizona Gov. Katie Hobbs signed an extradition warrant for Vallow's repatriation to Maricopa County to face charges in connection with the death of Charles Vallow.

She could also be charged with the attempted murder of Brandon Boudreaux, the husband of Vallow Daybell's niece.

Chad Daybell appears during a court hearing in St. Anthony, Idaho, August 2020

(post register)

Idaho prosecutors charged Vallow, Mr. Daybell and Cox with conspiring to kill people who presented “obstacles” to Mr. Daybell and Vallow's relationship. Two months later, she was sentenced to life imprisonment on Monday.

Mr Daybell is expected to stand trial in April 2024. No charges have been filed against him in Arizona.