Anyone able to complete this? I can go to the cave at night, Emma is there, the ghost is there, but nothing happens. I do not have a "flower" object in my inventory, which seems like a departure from other quests in this game.

you go to the cave the first time after you meet emma at the farm. then you go again after getting the flower in the marked spot just keep walking around the building and scan all over the place you'll find it. It doesn't appear until 10 pm not just after dark it has to be ten pm or later to appear.