Carlotto retired on August 30 Retired from her post as principal since August 30, 1978, Mrs. Carlotto became a member of the Abuelas Argentinas con Nietitos Desaparecidos (Argentine Grandmothers with Missing Grandchildren) by April 1979.
Efter at hun trak sig tilbage fra sin skolelederpost 30. august 1978, blev Estela de Carlotto medlem af Abuelas Argentinas con Nietitos Desaparecidos (Argentinske Bedstemødre til Forsvundne Børnebørn) fra april 1979.