Just wondering if the sim in the other household in the Reaper career? The reaper career reward makes the sim immortal so whenever Grim shows up to reap them, he just revives them instead. If they're constantly dying in an accident or something the game is just going to keep reviving them. If they're not in that career, I wonder if it still has something to do with the game script running a revive scenario instead of a reap scenario.
If they are dying from an accidental death, you could try turning off accidental deaths for that sim in the neighborhood stories options to see if it at least makes it go away for the time being. If they are dying of old age, I guess the best option to get rid of the annoyance would be to just turn off aging for played households and play rotationally for the time being.
