What is the main conflict in Lie Down in Darkness by William Styron?

Loftis lives in the fictional city of Port Warwick, Virginia with his wife Helen and their daughters, Maude and Peyton. The narrative revolves around Helen and Milton's actual and metaphysical journey to bury Peyton from the time her body arrives at the train station in Port Warwick until they reach the funeral home for Peyton's burial.