What character flaws or shortcomings does the main character have?

How you answer this question depends on who you see as the main character of "Everyday Use," so I will explore a couple of possibilities.
We could first think of Mama as the main character. The reason for this is that she is the first-person narrator of the Alice Walker's short story. Mama's major flaw is her limited perspective and favoritism. She obviously favors her daughter Maggie, who lives with her, over Dee, who left the family to attend college. Mama and Maggie spend all their time together and live conservatively. Dee, on the other hand, is more progressive. Mama thinks Dee is snobby and misguided, so she has trouble getting along with her daughter. She takes Maggie's side in the debate over who will inherit the family quilts. When we hear the story from Mama's perspective, we agree with her, because we only get her opinion of Dee.
If we consider Dee the main character, we could identify her main flaw as her insensitivity to her family and her superiority complex. She thinks her education makes her better than her mother and sister. She thinks she knows more about African and African American culture than they do, so she should have the quilts. She comes off as condescending and insults her sister. It is difficult to sympathize with Dee's character, especially since we get the story from Mama's perspective.