Who is the antagonist of Interpreter of Maladies and why?

In "Interpreter of Maladies" by Jhumpa Lahiri, the antagonist could be argued to be the protagonist's own feelings of disconnection and discontentment rather than a traditional external antagonist. Mrs. Das struggles with a sense of emptiness and dissatisfaction in her life, which impacts her relationships and interactions with others. This internal conflict drives much of the story's tension.