Final answer:
In 'Gods of Jade and Shadow,' Casiopea lives in the fictional town of Uukumil with her mother in her grandfather's house.
Step-by-step explanation:
In Silvia Moreno-Garcia's novel Gods of Jade and Shadow, the fictional town where Casiopea lives with her mother in her grandfather's house is called Uukumil.
This town is not one of the major cities of Mexico like Merida or Veracruz, but rather a smaller, invented location that plays an integral role in the narrative as the starting point of Casiopea's journey.