I shudder at the details of this story. I have no doubt that the woman suffers some form of mental illness. Yet, she was competent enough to have planned the murder and to have carried it out. The woman used a stun gun on the pregnant mother, and what follows is extremely grisly. She then pretended to have had the baby, but that was her undoing.
If you have the stomach to read the details, then please read on, but if not… forget about it. If the woman goes to trial and is found guilty of her crime, she will be eligible for the death penalty, leaving a young son and daughter to fend for themselves, and that is the real tragedy of this story.