Heather, recall, offered Daunis drugs at the bonfire several days ago—so her disappearance may be connected to the investigation, if not just generally concerning. As Daunis spends more time with the Elders, she expands her community and gains important insight that may genuinely help the investigation. This shows Daunis that she can indeed do things her way; she doesn’t have to help the investigation the way Ron initially asked her to (by experimenting with mushrooms and meth herself). However, it also seems ominous to learn that bodies sometimes wash ashore on Sugar Island, especially knowing already that David’s death was likely the result of foul play.