Same here, since I install Nightlife I also notice the bills in the Dreamer house have all disappeared. This is not related to the patch since it was like that right after I install Nightlife. I did not notice though if we still had the pop-up message that Darren wanted to paint but have to pay a lot of bills. For players that are playing them for the first time, they will look for those bills all over the house poor them...
Yes, the message still appears! I've resurrected the daytime Darleen, but she has no memory of getting married to Dirk, but I've now managed to give her a personality! However, the other Darleen still exists in her nightie, isn't (apparently) in the Default house when you use the teleporter shrub, and is dead twice! I'm going to try moving her character file out onto the desktop to see if that changes anything with the other Darleen - it's my guess that (since Darleen was supposed to have died on another lot) that they somehow managed to split her into the real Darleen and a clone, and usually deleting the clone improves the situation.
These duplicate sim ghosts should really have been spotted and sorted before the game was ever released, but at least it gives us something more to complain about!