What is the main conflict in Letters of a Woman Homesteader by Elinore Pruitt Stewart?

Letters of a Woman Homesteader is a compilation of letters written by a young woman named Elinore Rupert, a widow with a small daughter named Jerrine, to her former employer, Mrs. Coney. When Elinore's husband died in a railroad accident, she held down odd jobs until she heard about the possibility of getting her own homestead and being self-sufficient. So she became the housekeeper for a Wyoming rancher, a Scotsman named Clyde Stewart. The letters are all genuine, with only the smallest alterations and tell of Elinore's experiences in Wyoming between 1909 and 1913.