Babita Bhatia seduces her father-in-law because he was rich. She married Ratan, because she secretly desired his father.
Ratan, Babita’s husband and Sunny’s father, died young. Babita felt old, prematurely old because she was widowed in her 30s. She gets her young son Sunny, to sleep in her matrimonial bed. Until the day he protests by exclaiming he is not her spouse.
Unfortunately for Babita, she is unlucky twice. First, her husband died young. Secondly, her mother-in-law “Nani”, is living a long life.
These are characters in the book The Loneliness of Sonia and Sunny, by Kiran Desai.