Nursing Sister L. A. 's photo appeared in Our Heroes in The Great World War, compiled by J. H. De Wolfe, Patriotic Publishing Co., Ottawa, Ontario, 1919. According to this source, she was overseas for two years and served in France.
Further research is required. There is no attestation online at present that can be matched to this name. The De Wolfe book generally included names from Ottawa and the surrounding area.
Image to be attached shortly.