In 1889 he was elected grand president for Australasia of the United Ancient Order of Druids; on his retirement from that office he was presented with a gold medal in recognition of 10 years continuous service on the board of directors.

[3] Isaacs left Victoria in July 1899 to live in Adelaide and take the role of managing trustee of the estate of his father-in-law Ralph Raphael.

He also filled the role of chief magistrate during World War I, and was chairman of the Finance Committee for more than 12 years.

[3][4] Isaacs was a football enthusiast, a master of the St Andrews Masonic Lodge, a master of the Southern Cross Masonic Lodge, for three years chief president of the South Australian branch of the Australian Natives' Association, and president of the Adelaide Jewish Philanthropic Society.

She died at her home, "Quevedo", 2 Main North Road, Thorngate, on 10 July 1937, aged 80, and was buried at West Terrace Cemetery.