When Aaron Hernandez was found dead in his prison cell on April 19, 2017, it was reported that he was hanging by a sheet, and that the words “John 3:16” were written on the wall in blood and in ink on his forehead. His death has been ruled a suicide, however, his fiancée, Shayanna Jenkins-Hernandez, says she doesn’t believe that the man she has loved since high school would take his own life.

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In an exclusive interview with Dr. Phil airing Monday, Jenkins-Hernandez says her fiancé wasn’t a religious person and quoting a Bible verse did not seem like something he would do.

“Aaron was spiritual but he wasn’t the kind of guy to get up every Sunday and go to church,” Jenkins-Hernandez says, adding that Hernandez hadn't spoken about that verse with her. “None of it is very believable to me. Not the findings, not the investigation. I don’t believe it. As far as the scripture, there was no knowledge that he brought to my attention.”

WATCH: Aaron Hernandez’s Fiancée On His Suicide: ‘I Never Would Have Suspected Something Like This’

“They report that a guard checked him at 1 a.m. and he was alive, and surveillance video, they say, that no one entered or left his cell from 8 p.m., and he was discovered at 3 am,” Dr. Phil says to Jenkins-Hernandez. “Do you believe that?”

“I don’t. I believe there’s some unaccounted time,” she says. “I don’t think that things were done properly. I feel like he could have been saved, or something could have been done, or whatever the case may have been. I feel like someone was in the wrong somewhere, and I want answers.”

WATCH: Last Words Aaron Hernandez Said To His Fiancée

Hernandez was serving a life sentence for the 2013 murder of Odin Lloyd. Five days prior to his death, he had been acquitted in a 2012 double murder, and was appealing his conviction in the Odin Lloyd murder. Jenkins-Hernandez says he was positive and excited to come home, and says she doubts he took his own life.

On Monday’s episode, Jenkins-Hernandez, who is mother to Hernandez’s 4-year-old daughter, discusses the note he left for her and why she has questions about it. And on Tuesday, she responds to rumors about the football star’s sexuality and his alleged intimate relationship with a fellow inmate. Check here to see where you can watch.

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What Aaron Hernandez’s Fiancée Says Was ‘Odd’ About His Note To Her