Who is Amy Driffield from Cakes and Ale: Or the Skeleton in the Cupboard and what is their importance?

When we first meet Amy Driffield, she is the nurse of the renowned late-Victorian author, Edward (Ted) Driffield. To everyone's surprise, she becomes his second wife. She reorders his life, organizes his time, and for twenty-five years keeps him going. His death has left her lonely, and as a result, she encourages author, Alroy Kear, to write a sanitized biography of the great man of letters. When controversy arises over where to bury her husband, Amy has him interred in Blackstable "among the simple people he knew and loved so well."