I just had a thought: Maybe Alexandria hasn't been "lucky".
Perhaps there is a hired army outside of Alexandria's walls that is protecting it, and the leader needed to bring our group into the city to protect the soft residents from the protectors outside the walls.
The leader doesn't want a watchtower guard to see what is going on outside the walls. She doesn't want the new people to see what is going on outside. She has made a deal with the devil.
Instead of an "A" their marking is a "W'. For some reason "The Time Machine" came to mind along with the strange relationship between the Morlocks and the Eloi.
A W is an upside down M. I don't know, I can't sleep, so perhaps I have gone insane.
