I know this was lightly touch on but I did not see a direct answer to my question that I now have. I saw that Areelu Vorlesh is supose to come to the city to corrupt the fragment, but the module says that there is no official timetable on this. My question here being, what is a good timetable to use that poses some threat to the group without forcing them to rush through everything? Do I have it so that she is attacking the city and fighting her way to where they are as the group makes their way to the wardstone fragment? Or just say if they spend more than hour in the chapel then the bad guys win?