Explanation: Molly Farren was secretly married to Godfrey Cass, they had a son named Eppie. Molly was addicted to opium. But Godfrey also marries Nancy Lammeter, for which Molly felt betrayed and hated her husband Godfrey. Finally Molly dies of an overdose.
The lines and phrases in the excerpt that suggest that redemption and danation are predestined and cannot be changed by human choice The reward of sin is death: that's hard.