Books like From Cradle to Grave: The Short Lives and Strange Deaths of Marybeth Tinning's Nine Children

It's not really possible for me to rate this book, it's just too heartbreaking to like. I started the story because I was interested to find out what kind of person could do something so horrifying to her children, and finished it only with the sense that I could never understand someone like this. They defy all logic. Marybeth Tinning maintains that she loved her children, but if this is true why did she bury all of them long before their natural lives ever would have been over? The only child we can say with certainty that she didn't have a hand in killing was her third child Jennifer, and even then it's suspected that the meningitis the baby got in utero that did kill her was caused by Marybeth attempting to induce labor. What kind of fractured personality does it take for someone to kill her children and then say with complete certainty that she had nothing to do with it? After reading this book I have more questions about this woman's mental health than the answers I was looking for.