2 rats in cage will kill each other if they get random shocks. They falsely blame each other. Your mother blames all of her failures on me, and wants to kill me, and she will want to kill you, when she blames you for her future failures. And she will blame you. It is rat (natural) behavior.

We are the rats in the cage of society, and your mother has become violent and delusional, terrified of the next electric shock from life.