Andrea Yates, knew it was wrong?

    Andrea Yates was a mother of 5 who murdered all of her children knowing what she was doing and then she called 911 requesting police and ambulance. She believed she was a bad mother and she wanted her children to go to heaven before then sin. She had committed suicide multiple times and had been in psychiatric hospital. The doctor didn't mention that she is diagnosed with psychosis which is rare to her husband. The question is weather she knew what she was doing was wrong or not? I believe people who are mentally ill should go to psychiatric hospital and they can't be charged with the same crimes as mentally sane.