When Hades brought Persephone to the Underworld, he already had a daughter, and so did she. Persephone had one condition for Hades: she must have her daughter with her, and that her daughter would have the freedom to come and go as she wished. The king of the Underworld and his new queen agreed to be parents to each others' children, and the two girls would be raised together as sisters. Thus Macaria and Melinoe grew up together, close as two siblings can be. True to his word, Hades lets Melinoe split her time between above and beneath the earth, taking her entourage with her when and where she feels like, and Macaria is free to go with her. When work calls, Macaria would often accompany Melinoe above ground, and Melinoe would often assist Macaria with her duties as a goddess of death.