Lonesome Land by B. M. Bower
Very interesting reading about a young woman coming to grips with learning her new husband is an alcoholic and having him degenerate into an abusive thief. It was good to read how the rather stuck-up young lady learns to make friends with the rough Westerners, and to survive the difficult living conditions with a good bit of bravery. At many spots in the story, it felt as though the circumstances were intensely personal to the author herself, lending a strong authenticity to the story line.
The descriptions of frontier Montana were very interesting and almost tangible--the rough town, the prairie fire, the round-up, the shivaree. 
B M. Bower has written a number of novels about life in the West and on the plains.  They are HERE.