Through the Gates by A.V. Schmidlin

Who do you answer to after a life of loss and abuse carved thick with your own doubts about morality abruptly ends? Mallory Carter never asked herself this question; until an existence polluted with betrayal by her husband and cut to pieces by the death of her only daughter brings her to a place where she never imagined to be, in front of Saint Peter at the Pearly Gates. Now, to reunite with her daughter for eternity, Mallory must explain the choices she made when she once believed in no consequence.