I've read that Hecate helped Demeter find Persephone when she was abducted by Hades; what pushed you to have her be more on Hades' side in Receiver of Many?

Writing that aspect of her was a challenge.  She definitely helped Demeter find Persephone, which is why I made sure to include this chapter in the book.

In the original Homeric Hymn to Demeter, she definitely comes down on the side of the feminine challengers to the abduction of Kore from Nysa (along with Demeter and Persephone herself) an an opposition to the male supporters of the abduction (Zeus, Hades, and Helios).

In Receiver of Many, I did have Hecate challenge Aidoneus at times, especially early in his and Persephone’s relationship because first and foremost Hecate’s role in the Underworld was to serve, support and act as mentor to the Queen and be a mentor to her betrothed King until she took her throne.

In every other mention of Hecate in Hellenic lore, she lived in a cave in the Underworld, was Persephone’s confidant and guide in the Underworld, and all of her epithets reflect that.  One of my favorite ones was Kata Chthonia, my screen name, which means The Lady Who Dwells Beneath the Earth, and another one is Aidonaia, the Lady of the Underworld.  That and another title, Anassa Eneroi, the Lady of those Below was what made me decide to make her a member of the Underworld’s nobility.