Final answer:
False In 'Gods of Jade and Shadow,' the Xtabay is not the ghost of Casiopea's dead father but a character from Mayan folklore in the story, which is false.
Step-by-step explanation:
In the book Gods of Jade and Shadow by Silvia Moreno-Garcia, the statement that Xtabay is the ghost of Casiopea's dead father is false.
The Xtabay is a mythical character from Mayan folklore in the book, not related to Casiopea's family. Instead, the story follows Casiopea as she inadvertently releases the Mayan god of death, Hun-Kamé, and embarks on an adventure with him. This novel blends elements of mythology, fantasy, and the historical context of 1920s Mexico.