It's early evening, and you have plenty time to investigate a bit. Though you will find that the farmers have boarded up for the night, and won't answer any doors.
1) I'll do my best to draw you guys a map of the 'town' and post it tomorrow.
2) They don't appear to have anything in common, other than being part of this community.
3) You haven't looked yet. You can do so in your next post, if you like.
4) Not that you noted. The skeleton was walking the outdoor mushroom patches.
5) Sedostra is a human only community, by chance, not because of some racial conflict.
6) The people disappeared over several non-successive nights. There doesn't seem to be a pattern there.
7) Mosk and Irana disappeared in the night. Steph didn't come home after a day of work on the field.
The order is as I described in my earlier post.
Hope that helps somewhat. I think investigating the town will lead to a few more conclusions, and if you choose to do so I will include it in my update tomorrow.