Mackenzie Shirilla uses a secret language while speaking with her mother in multiple jail phone calls obtained by PEOPLE

A jail call newly obtained by PEOPLE reveals that Mackenzie Shirilla, convicted of murder in the 2022 deaths of her boyfriend and friend, expressed concern over the possibility of receiving the death penalty.

Mackenzie Shirilla's Instagram account shared screenshots from her appeal, as well as text messages with her boyfriend Dominic

Mackenzie Shirilla’s former fellow inmate is expanding on why she claimed the convicted murderer reminded her of Regina George from 2004’s 'Mean Girls.'

“Hell on Wheels” killer Mackenzie Shirilla incredulously whined she was the “third victim” of a fatal wreck in which she intentionally crashed her car and killed her boyfriend and friend during a jailhouse call,

Mackenzie Shirilla worried about her future in a jail call with her mom, saying she'll be 'old' when she's released and ‘not gonna be able to have kids’

Mackenzie Shirilla’s aunt tried to defend her niece in her murder case ... telling the judge Mackenzie was in "very much in love" with her boyfriend before the fatal car crash ... TMZ has learned. TMZ obtained court docs filed as part of Mackenzie’s appeal of her sentence.

Steve Shirilla was placed on administrative leave from his teaching job after adamantly defending his “Hell on wheels” daughter Mackenzie Shirilla in a new Netflix documentary.

A newly released jail phone call reveals Mackenzie Shirilla discussing prison life and her future after Netflix’s The Crash renewed interest in the case.