Sue Barton, Rural Nurse by Helen Dore Boylston (1939)
"Hello darling!" It was Bill on long distance from New Hampshire. Yes, everything was set for the wedding. Honeymoon. Back to the hospital. Bliss. Then his father's sudden death throws a burden on Bill; postpones the marriage. Sue, to be near him, persuades the townspeople to hire her as their first visiting rural nurse. A hurricane, a typhoid epidemic, and community suspicions give Sue and her fiancé plenty to do among the salty characters of Springdale.
Another novel by the writer who knows both nursing and people--Helen Dore Boylston. (back cover)