in paragraph52 how does edna's self assessment and mention of the "codes" underscore the feminist theme of this story?

Is this the paragraph you're referring to?

In short, Mrs. Pontellier was not a mother-woman. The motherwomen seemed to prevail that summer at Grand Isle. It was easy to know them, fluttering about with extended, protecting wings when any harm, real or imaginary, threatened their precious brood. They were women who idolized their children, worshiped their husbands, and esteemed it a holy privilege to efface themselves as individuals and grow wings as ministering angels.

If so, we see that Mrs. Pontellie does not regard herself as a hands on mother. Unlike the other mothers at Grand Isle, she wasn't attentive to her children. She didn't play with them, frollick with them in the water, or worry about their circumstances. She didn't fit into the role of mother and wife that the others seemed to embrace, doting on both her children and husband. She was distant.... non-commital.