So many unanswered questions to this story. One stark standout; why would a mother of six target this one child? In my research on serial killers, it is so common that he has siblings who were raised in the same home but did not turn out the same way. It's a reminder of (among many things, one of which is how just because someone is biologically capable of having a child, doesn't mean they can effectively parent one) of how no two people are really raised in the same family. Some children are favorites, others are scapegoats, etc.