If you want to go back and review it's chapter eight. Daddy Diggs has made a gift of his business to Olive, who has been saving for her own brothel featuring spanking. Marie, who has caused many problems for Cora and the others due to her lying and manipulation is now Olive's employee. And she must be punished.
In what I consider to be a very memorable scene, Olive administers a few swats to Marie on the saloon's stage, then auctioned off the privilege of administering the rest of her punishment to the highest bidder.
Take a minute and go back to read the whole scene. It's wonderfully fun and sexy, then come back and tell us what you thought.