I rubber-necked and looked that up. In the case you're referring to the husband convinced his wife to shoot a book while he held it in front of his chest, believing it would stop the bullet. He set up two cameras to film it. So yes, this is arguably also poor engineering, but it would be more similar if the slide designer had been accidentally killed by the 10-year-old boy after convincing the boy to launch him down the slide.
They ran a YouTube channel. He convinced his girlfriend to shoot him with a pistol while he held a thick book in front of himself, expecting the book to stop the bullet. The book did not stop the bullet, and he died from the gunshot wound. She pled guilty to manslaughter.
She got a pretty short sentence, to be served in multiple short periods of incarceration. I suppose so she isn't away from the kids very long at a time.
I think they took pity on her, as it was the guy's idea, he assured her it would be safe, she had one kid, and had another one on the way at the time of the incident.
Of course, if she were black she'd probably be in for life.