All's Fair in Love and War and Death

Elizabeth Bennet discovered she had a particular sensitivity even though it came from grief. When people die, their souls are met by a departed loved one as an attendant to escort them across to the afterlife. Elizabeth witnesses that it is possible for the living to follow the dead to the next world when her mother dies and she sees her grandmother escort her mother to the next world.
Few believe her, and the Bennet’s loss changes the dynamics of the family. When Elizabeth is invited to London, she meets two cousins. First, Colonel Fitzwilliam, and then Mr. Darcy. While they both admire her, it is Mr. Darcy who captures her heart, and they fall in love. Circumstances part the couple when she is unexpectedly called home to Hertfordshire.
Fitzwilliam Darcy has spent many years enjoying the delights of the London Season each spring when he meets a country miss from Hertfordshire of all places which has unpleasant memories/associations for him as the place where his father died.
But her dark eyes and charm and uniqueness utterly bewilder him, and Darcy finds himself falling in love. He is slow to declare himself, and Elizabeth escapes. Darcy realizes how besotted he is and is determined to have her. He pursues Elizabeth to the country to claim her which leads Darcy, Elizabeth, and Colonel Fitzwilliam on an extraordinary journey through another world.
Theirs is a love stronger than death.