Quote 10
"No; there's nothing more humiliating than to look poor among a lot of rich women." (37)
Wealth and womanhood are intimately bound up in Mathilde's mind. She wants to look wealthy so she can compete with the rich women.
Quote 11
The day of the party arrived. Mme. Loisel was a success. She was the prettiest of them all, elegant, gracious, smiling, and mad with joy. All the men were looking at her, inquiring her name, asking to be introduced. All the attaches of the Cabinet wanted to dance with her. The Minister took notice of her. (53)
Mathilde's a huge hit. She gets all the men to pay attention her, including the most important one of all (the minister). This is the best moment of her life.
Quote 12
She danced with delight, with passion, intoxicated with pleasure, thinking of nothing, in the triumph of her beauty, in the glory of her success, in a sort of cloud of happiness made up of all these tributes, of all the admirations, of all these awakened desires, of this victory so complete and so sweet to a woman's heart. (54)
The narrator seems to be suggesting here that Mathilde's desires – to look glamorous and beautiful and be desired by men – are more generally "woman's" desires. That's what makes women happy and pleases their "womanly hearts." Again, it seems to be entirely stereotyped.