Inheritance trilogy (N. K. Jemisin)

Yeine Darr is an outcast from the barbarian north. But when her mother dies under mysterious circumstances, she is summoned to the majestic city of Sky. There, to her shock, Yeine is named an heiress to the king. But the throne of the Hundred Thousand Kingdoms is not easily won, and Yeine is thrust into a vicious power struggle with cousins she never knew she had. As she fights for her life, she draws ever closer to the secrets of her mother's death...

"For two thousand years the Arameri family has ruled the world by enslaving the very gods that created mortalkind. Now the gods are free, and the Arameri's ruthless grip is slipping. Yet they are all that stands between peace and world-spanning, unending war. Shahar, last scion of the family, must choose her loyalties. She yearns to trust Sieh, the godling she loves. Yet her duty as Arameri heir is to uphold the family's interests, even if that means...