As the men of the fort grow desperate for female companionship, a woman arrives to answer their prayers. Her name is Bettina, Sister Bettina, aka Bad Betty. A card shark, she takes her thieving ways through the wilderness dressed up as a nun. Blackfly is tempted by forbidden love. In the end, Bad Betty takes off with MacTavish's strong box, but not without a fond farewell for Blackfly.