Maternal Filicide, Why?

With everything that is wrong with this world, what we rarely see is maternal filicide. Trust me tho, it happens. First off, what is maternal filicide? Maternal filicide is a simple but very very disturbing thing to think about. Basically, it's when a mother kills their children. I know, crazy right? Now let's discuss why it happenes. Most people would think that children are blessings and that killing them is completely bizarre and these people are right. It takes a very mentally sick and insane person to commit such a crime. Research has been conducted on some of the crazy people who commit this crime and it has been said that most of these parents have depression, psychosis, and suicidal thoughts. Also, the researchers have found five motives to the crime: Altruistic filicide, acutely psychotic filicide, fatal maltreatment filicide, unwanted child filicide and spouse revenge filicide. What this shows is that the murder  of these children isn't directly because they feel like it, there is most likely a something that is driving the person to kill them. For example, let's take fatal maltreatment filicide. The parent isn't just in the mood to kill their children, nor do they want to. What drove them to do it was repeated abuse. This is kinda an exception. In such a case, the parent didn't mean to kill the child. Another fact that was found during research that real struck me was the gena collection of sayings and ideas attributed to the Chinese philosopher Confucius and his contemporariesder ratio. What I mean by this is the percentage of mothers who killed their children to the percentage of fathers who killed their children. 33% percent of the killings were carried out by fathers and 30% by mothers. Now tell me, do you think this is right?