I read this story about seven years ago for a college class, and while I remember most of the plot, I cannot recall the title or author.
In this story, there is a colony of orthodox Jews and one of conservative/reform Jews, along with the native population. There is a ghost floating around who is giving the native alien population problems (I think the title is a reference to this? It might be the word for a malignant ghost in Yiddish?). At the end, the aliens want to convert to Judaism; the orthodox say no, but the conservatives/reform welcomes them in. I think the narrator's kid was getting having their mitzvah with some alien kids.