What metaphors are used in The Management of Grief by Bharati Mukherjee?

As Mukherjee writes in the introduction to Darkness, "Indianness is now metaphor." She herself had fashioned her identity as an expatriate during her years in Canada (1966- 1980) and did not fully appreciate and embrace the "exuberance" of immigration until she left the "mosaic" for America's "melting pot."