The Cult of the Wish Maker is not as happy as it sounds. The Wish Maker is an unnamed god. He created Knashthra as the "wish" of one of the previous Wanderers, making a seemingly perfect city-state where Death rarely visited, and tragedies were few. The land is fertile, and the riches are plentiful. This prosperous nation is the perfect place to raise a family. Usually.
One couple within this secret cult wished for a child, a real one with a soul of their own, and the Wish Maker granted them their request in exchange for their bodies being used as puppets when they eventually died.
It wasn't long after Zethra turned twenty-seven, still a small child, that tragedy struck the family, and her parents were killed. Like many children, her parents didn't stay dead for long, and the Wish Maker raised her and other orphaned children to be the perfect followers through his puppets. It lasted until sometime after she turned one hundred, finally an adult, and she was able to run away from the cult. She knew what the bargains were like, how the terms were unbalanced and unfair to the poor mortal whose wish was granted when they made their pact. She wanted nothing to do with it.
She ran for her life to find a new home elsewhere in the Feywilds, or in Toril, while not being caught by other eldritch cultists and dragged back home for judgment. She doesn't have a plan beyond survival and starting over. She still wields the blood magic that she was taught, and she tries to use it to help rather than hurt, but she's not above hurting people who pose a threat to her new way of life. She now follows the god of Death, Healing, and Suffering, Naralis, focusing on the healing part while coming to terms with the other two aspects of his domain.
Zethra still wanders.