I had a weird bug today. Some time ago, I killed the fishermen who tried to save the mind flayer. I came back to this portion of the map where they normally are building a boat to get out of the wilderness. Imagine my surprise when I found the female fisherman alive. I tried to engage in conversation with her, but obviously, she didn't want to talk to me because I'm a monster. After finishing the conversation the two remaining fisherman materialized out of thin air as well. Resurrection and without the needed scroll indeed.