The following is based on Van Buren and has not been confirmed by canon sources.
“The Daughter of Hecate won't help me because she says I haven't shown proper respect for Hecate and the spirits. I'm really afraid that the bone's not going to heal right and I won't be able to walk.”
A Blackfoot tribal integrated with the Hangdogs, Fast-Hands is a guy who's really good with knives. He recently fell while climbing, broke his leg, and had to drag himself back to town. He's done something to offend the shaman Merrin, and she won't help him. He's worried that this will leave him crippled and he won't be able to be a warrior any more; he's not ready to become useless.
Reconcile Fast-Hands and the Daughter of Hecate: The real reason Merrin is upset is that secretly, she and Fast-Hands had an affair that ended badly, and her feelings got hurt. She'd like him to apologize, and maybe even to continue their affair. He's not so sure about getting back together, but can be cajoled into apologizing. This quest is the only other way to fix Fast-Hands' leg if the Prisoner doesn't have the required Medic skill.
Once Fast-Hands' leg is fixed, he will be able to move around with a limp. After two months he gains normal movement again, at which point he will keep an eye out for the Prisoner and reward him.