As Mr. Ashton presented yesterday (or was it LDB?), KC falls into a rare category of filicidal women-A category that it seems men more often relate to, from what I've read-She is not connected with her victim. She is not saving her victim from a harsh life (though she tries to rationalize that way after the fact with her jail buddy). No schizophrenia...She does not easily fit into one of the categories that psychologists have outlined.
She was trying to get Caylee out of her way, any which way she could.
I don't think there is anything mitigating about this form of filicide.