Each of the charges could have been raised to the statute of a capital crime.
The lesser charge was aggravated manslaughter. They could have charged her with negligent homicide. They could have charged her with “normal” manslaughter. They could have charged her with wrongful disposal of the body. They could have charged her with obstruction of justice.
She probably would have gotten convicted on all of those.
Not with jurors that already stated they couldn't judge another person....
You are absolutely right. Prosecution dropped the ball in re to chgs.