He [Zeus] assented that her daughter, every time the season came round, would spend a third portion of the year in the realms of dark mist underneath, and the other two thirds in the company of her mother and the other immortals.
This relates back to the readings where Persephone is to spend the harvesting months with her mother and the dead months of winder with Hades. I find it interesting that while her talents are in harvesting, she somehow finds happiness in the end from being the Queen of the Undead. I'm very curious as to how such contradicting things was possible.