In 1903, Flora married John Thompson, and had the first of her three children. John was a sorting clerk at the Post Office in Bournemouth, and it is thought they met while he was temporarily working in Aldershot.

They moved to Bournemouth where John worked. Flora began entering writing competitions in the Ladies Companion, a magazine for women with a literary interest. As a married woman, Flora was not permitted to work, but her prize money helped towards school fees for her children.

In 1916, John transferred to a post in Liphook, Hampshire. During World War I, Flora once again worked at the Post Office with her husband, and continued writing in her spare time. John was originally from the Isle of Wight, and jumped at the chance for promotion to Dartmouth, Devon in 1927. Flora was reluctant to move, but eventually came to love the surrounding countryside.