Spoiler alert.
In the house with 3 ghosts when meeting Logan, getting all clues together and all 3 items, I proceeded to talk with Logan and giving him the items. Before I started I had all 3 options in the dialogue with him (story how Dana died, story how Art died and story how Jess died). I wanted to "complete" each ghost separately, i.e. tell his story first, quit the dialogue, give Logan the appropriate item and only then continue with next ghost.
After completing Art first and Dana second, I suddenly didn't have the dialogue option about Jess anymore (giving the dog collar still solved it though).