hahaha well it was a dumb plan. one of the men near the edge of the town would have screamed and been heard by the night watchmen outside of the walls anyway. but this kind of betrayal is a fun twist
they should have started the evacuation bit by bit during the day and night on a not-busy day after soldiers left, then the remaining prostitues at 3 am start the fire. that would allow the greatest delay before the tunnels were discovered