Why did Ona not come home?

One didn't come home because she was at a brothel with her boss. Connor, her boss, had taken her there telling her that if she did not go he would ruin her and her family and make sure they never worked again. Mrs. Henderson hates her, so they devised a plot. Connor offered her money. He begged her, threatened her, and told her that he loved her. Finally, he told her that she had to come and took hold of her one night in the factory and raped her. Then he began making her come to the brothel.

She was at a brothel with her boss. (Which is a type of dinner. A business dinner).