 After her son's death, she fought on behalf of Alexander's son Alexander IV, successfully defeating Adea Eurydice.After she was finally defeated by Cassander, his armies refused to execute her, and he finally had to summon family members of those Olympias had previously killed to end her life.According to the 1st century AD biographer, Plutarch, she was a devout member of the orgiastic snake-worshiping cult of Dionysus, and he suggests that she slept with snakes in her bed.