In literature

In literature, mockingbird symbolizes innocence, purity, honesty, which I see in Edna’s accomplishing the duty which her mother and wife roles assume. Even if she is not the role model in her mothering, I think she is trying her best to raise her children and to give them wings to fly, wings she does not acknowledge she has as well.
By making a parallel between Edna and the mockingbird, I’d like to point out the fact that the author wanted us to see Edna’s changing, from the honest, innocent woman who is taking care of her family in the first part of the story, to the woman who loses interest in her mother and wife roles in the second part.