Prosecutors say they will not charge Brooke Floyd with the death of Brain Floyd after reviewing autopsy results on Monday.
Brooke is charged with one count of manslaughter for the death of her 10-month-old son.
In July, Brian Floyd and his baby boy, Harper, were reported missing.
Brooke Floyd told deputies she and her husband had taken meth before driving with their son into a remote area off a road where their truck broke down.
The affidavit says Floyd and her husband had been hallucinating and believed they were being attacked by people following behind them and that they had tried to escape.
The bodies of the father and son were found five days after they went missing.
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