Wicked's parents were Polish immigrants who didn't make it on their pilgrimage from the north. She was three when a local tribe took her in it was quickly discovered that she could communicate with spirits. A priestess raised her to be a priestess as well she was taken away from the tribe she accepted as family by a Marshall.
She was given a plot of land for her "troubles". The church stopped checking on her when she nearly gave the deacon a heart attack with her spirits.
She uses what the tribe taught her to heal people and she rides into town every so often toting her herbal remedies some work, others are just sugar water and snake venom.