'Her Mother's Secret' is a romance novel written by Emma Dorothy Eliza Nevitte Southworth. The story follows a young woman who was betrothed to a man that had just returned from serving in the Navy. However, a nefarious individual discovered that the woman was wealthy and forced her mother to allow him to marry her instead. Upon his return, the betrothed man discovered that the woman was engaged to the undesirable suitor and was told that she had made the choice to marry him. The question remained, why had she made such a decision? Would the union between the woman and the undesirable suitor come to fruition?