A toddler died. Her mother was charged with murder but is not going to prison.

In this investigation:Why a Fulton County judge approved a consent agreement finding a mother not guilty by reason of insanity in her 23-month-old daughter’s drowning death.Investigative records uncover documented episodes of erratic behavior, untreated postpartum depression, and an uncompleted child welfare check in the 48 hours before the tragedy.Judges and legal experts explain the high burden of proof required under Georgia law and why the verdict leads to institutionalization rather than freedom.SANDY SPRINGS, Ga. (Atlanta News First) — In a case highlighting the narrow legal framework of Georgia’s insanity defense, a Fulton County judge recently found the mother of a 23-month-old girl who drowned to death not guilty by reason of insanity and ordered Asia Calabrese-Lewis committed to a state psychiatric hospital.The ruling closes the criminal murder case filed against Calabrese-Lewis three years ago, when Sandy Springs police pulled her daughter, Nirvana, lifeless from a retention