After I completed all the quests, the quest cursor appeared back at the house of Chiffon. When I got back to the house I was not able to enter the door and the quest marker disappeared. A while later I went back to the house and it let me enter. The interior layout of the house was the same as when Chiffon first spoke to me, (minus Chiffon). I saw the proper ending on YouTube with the house in shambles and the note for you to read. My game can no longer trigger this event.