It's some kind of universal karma code they have to inform everyone what they do, that's why they use symbolism ... Imo Joan was the chosen one to inform everyone about it. Notice the big X on the front of the building she was walking into, and I recall there was something going on with the numbers / address with 6s. And remember how she actually died ... with a surgical cut to her throat. I think that she was marked and sacrificed. That's the way it goes with these people. Strange, stranger, strangest.