My father and I just finished The Moon and the Face by Patricia A. McKillip

My father and I just finished The Moon and the Face by Patricia A. McKillip, sequel to Moon-Flash.
Leave to McKillip to harmoniously combine sci-fi with shamanism. To write an anthropological book in which, for Kyreol and Terje, the strange becomes the familiar and the familiar strange as two separate worlds come together through dreams that stretch across the cosmos, the innate power of the Riverworld, and love. All via journeys that are at once utterly different and yet parallel each other. Leave it to McKillip to answer the final and greatest question of the book with both a yes and no. As Icrane said, everything is simple. Even when it is complex.