In 1925 she was a runner-up for the Newbery Medal for "The Dream Coach", the third collaboration with her brother. That same year, her novel "The Perennial Bachelor" was the eighth best-selling book for the entire year according to the "New York Times" and won the Harper Prize from her publisher, Harper & Brothers. An author of stories that mostly featured female protagonists, in 1927, she had another novel make it into the top ten list of bestselling novels in the United States. She repeated on the annual bestsellers list again in 1928 with "All Kneeling", that was made into the 1950 film "Born to Be Bad", starring Joan Fontaine and Robert Ryan.