Ex Mormon, born and raised in the LDS church. Grandpa was in the Mesa Temple Presidency, 1970's.
Blood atonement WAS part of the doctrine and practiced in the early church, for that matter, there are a LOT of "dirty secrets" in the foundation of the Mormon church that members new to the church will never know about unless they study the foundational doctrine of Joseph Smith and Brigham Young. The early church always found a way to skirt the issue of "murder" versus "divine intervention". Note: Mountain Meadows Massacre. My mother's 2nd marriage is to a man who's grandfather was a part of the slaughter and the journals from that dude are totally different that what the church claims. Polygamy is another "gray" area.
Did CMJArias know about "blood atonement"?
DOUBTFUL.
I've known about Mormon blood atonement for a very long time. I didn't know (and still don't know) the details, but I knew about its existence. While reading multiple posts about it in this thread, I kept wondering HOW I knew about it. Could it be because of true crime reading and watching? No, my sense was that I knew about it well before that. But HOW?
It finally came to me in the last few minutes: Gary Gilmore. Back in the mid-1970s, his trial and decision to die was a HUGE topic in the news and around the water coolers. Really, not a day went by that I didn't hear about it in some form or another, even though I wasn't even paying close attention. I KNOW I heard some talking head somewhere along the line mention blood atonement, given that he chose to be executed by a firing squad. The talk was that, because Utah gave the option of firing squads, it had to do with that, so the topic of Mormons was frequently brought up. At
australianhumanitiesreview.org, it says his brother firmly believed that that was why his brother chose a firing squad. Wikipedia says it's because GG thought being shot would be quicker and less likely to get botched.
After scanning the story, I now remember why it was such a HUGE deal. GG wanted to die. He refused to appeal, which brought all sorts of people out of the woodwork, insisting that he MUST appeal the decision, most notably the ACLU, not wanting his wishes to die as soon as possible to set a precedent that would affect other DR prisoners.
That said, this happened before CMJA was born, and the topic had died down (so to speak) well before it would have ever hit her radar. She may have seen the movie "The Executioner's Song", though, although I don't know if the BA subject was brought up in the movie (or the book by Norman Mailer, for that matter).