What is a short summary of the story Bess in Fast Lanes?

"Bess" tells of a sister and brother, as they first understand the types of love, the meaning of death, and the extent of their mutual dependence. Born just thirteen months apart, the two youngest in a family of twelve children, Bess and her brother Warwick grow up as twins; the age gap sets them apart from their older siblings and their aging parents, and their primary loyalty is to each other. Except for Bess's brief marriage, which Warwick refuses to acknowledge, the two remain together until Warwick's death forces the sale of the farm and scatters the remaining family.