It looks like the zone is not fully resetting. I ran in with another character today and the Pillar that has the 3 choices just had the crawl through the tunnel option on it. Carmella's hidden room was shown on the map and the secert door to her room was left open. When I walked into the room it didn't trigger the cut screen to start the end fight. Also I found some loot bags laying around from a run someone did before me. The mob respawned.