She's said her daughter has picked up a new hobby in prison, which is 'so sad'

The 21-year-old remains incarcerated in the Ohio Reformatory for Women, serving two concurrent 15-year-to-life sentences

Shirilla was reportedly 'bored as hell' while serving two concurrent sentences for murder

Steve Shirilla was placed on leave from his teaching job after the documentary

New texts show Mackenzie Shirilla told Dominic Russo she was scared her condition was 'just gonna get worse'

Steve Shirilla was placed on administrative leave from the school he worked at following the release of Netflix's The Crash

Shirilla announced her plans during a prison call with her mom, Natalie

Mackenzie Shirilla is behind bars after being convicted of double murder

The 21-year-old is the subject of a new true crime Netflix documentary

Mackenzie Shirilla and her mom Natalie were heard speaking in 'code' in newly obtained jail calls

The Crash on Netflix has brought renewed attention to Mackenzie Shirilla's case

Gypsy Rose Blanchard said remorse was about to hit Mackenzie Shirilla 'like a train'

The 21-year-old was sentenced to life in prison after murdering her boyfriend by driving her car 100mph into a brick wall

Shyann Topping was reportedly Mackenzie Shirilla's girlfriend behind bars, but their romance 'fizzled out'

The pair had a series of troubling conversations

Mackenzie Shirilla and Dominic Russo dated for four years

Newly discovered texts show 'threats' Dominic Russo had received from Mackenzie

The body language expert 'couldn't believe what he was seeing'

Being behind bars has not ended killer Mackenzie Shirilla's love life, with her prison girlfriend sharing what it was like to date her

Mackenzie Shirilla's chilling decision to drive a car into a wall at 100mph has been re-examined in Netflix's 'The Crash'

The 21-year-old is serving a life sentence in prison

Mackenzie Shirilla was 17 when she crashed a car, killing Dominic Russo and friend Davion Flanagan.

The documentary is currently at number one on Netflix, but it could have serious legal repercussions for her parole in 2037

Mackenzie Shirilla was convicted of 12 counts of felony