Job's Niece (Grace Livingston Hill #53)

From the back cover:

When Doris Dunbar’s loving father dies, her family is torn apart. Suddenly Doris is faced with financial ruin, a hateful stepmother, a disgruntled fiancé, and dying brother, and the care of younger siblings.

Just as Doris’s world is crumbling around her she meets Scottish businessman Angus Macdonald, whose unusual business proposition seems to lead her closer to the peace and answers that have eluded her.

What surprises await the Dunbar family — a family that so desperately wants to be together — in the midst of an impossible situation?