Karma is not God's retribution or reward in this life as stated by the mother of the main character. Either the mother is stupid/ignorant as a character, which does not seem to make sense, or the screenplay writer is.
Karma..................... 'In Indian philosophy, the influence of an individual's past actions on his future lives or reincarnations. It is based on the conviction that the present life is only one in a chain of lives . The accumulated moral energy of a person's life determines his or her character, class status, and disposition in the next life. The process is automatic, and no interference by the gods is possible. In the course of a chain of lives, people can perfect themselves and reach the level of Brahma, or they can degrade themselves to the extent that they return to life as animals. The concept of karma, basic to Hinduism, was also incorporated into Buddhism and Jainism.'
Karma..................... 'In Indian philosophy, the influence of an individual's past actions on his future lives or reincarnations. It is based on the conviction that the present life is only one in a chain of lives . The accumulated moral energy of a person's life determines his or her character, class status, and disposition in the next life. The process is automatic, and no interference by the gods is possible. In the course of a chain of lives, people can perfect themselves and reach the level of Brahma, or they can degrade themselves to the extent that they return to life as animals. The concept of karma, basic to Hinduism, was also incorporated into Buddhism and Jainism.'