This behavior started a few months ago. Initially, when I would mention his death (which she remembers) she would momentarily bounce back to reality and cover with “I guess I don’t want to believe he’s not alive.” It’s now gotten to be a 24/7 obsession and although she knows he’s dead, she also has strong delusions of him sleeping in her bed or seeing him at dinner. I cannot even tell white lies because she is angry that he left without leaving a note. It’s gotten so bad she now waits up all night near the door waiting for him to come home. I’m not sleeping and I’m at wits end on how to deal with this.