Hi, I'm studying the Interpreter of Maladies, by Jhumpa Lahiri. I'm...

Hi, I'm studying the Interpreter of Maladies, by Jhumpa Lahiri. I'm studying character development in the whole book including all of the stories. The question is: How does the author build or develop her characters? What techniques or resources does she appeal to? I'd be grateful if you included examples from the text. Thanks!