Well, I'm probably the only person who does understand that one, so you've come to the right place to ask!
Basically, you have to complete all five lauraStripper events in five consecutive days, starting from the day you trigger the first event in the thread. If you miss a day you can never finish the thread. It looks like you missed a day (perhaps you were out of the house one day at 2300). At this point there's nothing you can do except start the game over again from the beginning.
Or you can cheat. I recommend the second option. To cheat, press SHIFT-O to go to the command console, then type in
lauraStripEndDay = numDay + 2
exit
This will give you a couple more days to get the last event of the thread (just stick around your house at 23:00).