Which sentence from the story best shows the difference between Madame Loisel and the other guests at the ball?

From the text:

He threw over her shoulders the garments he had brought for them to go home in, modest everyday clothes, whose poverty clashed with the beauty of the balldress. She was conscious of this and was anxious to hurry away, so that she should not be noticed by the other women putting on their costly furs.
Loisel restrained her.
"Wait a little. You'll catch cold in the open. I'm going to fetch a cab."
But she did not listen to him and rapidly descended the staircase.