The handwriting on this photo is not Florence Elgie's writing. I suspect it is her mother Mary Louise Facey Elgie's handwriting.
Here we have a lovely candid photo of Edith Wilford Day, Annie Edythe Elgie (1912-1979), Florence Marian Elgie (1914-1996) and Verda Luella Elgie (1917-2009 and husband's grandmother)
Edith Wilford Day was the daughter of James Walter Wilford (1872-1942) and Annie Kilpatrick. James was the son of William Wilford and Anne MacKay and the brother of Margaret Wilford who married Samuel Facey