Ruth Sawyer 
Leerie [EPUB ebook] 

A nice little love story with a couple of twists I didn’t see coming. Leerie is the nickname of Sheila O’Leary, a young nurse at a sanitarium. Peter ends up there when he falls into severe depression and nobody can figure out the reason. Leerie correctly diagnoses the problem and helps him overcome it and you would think that would be the story, but that is only the skeleton. Leerie’s career as a nurse brings her into some interesting and dangerous situations that threaten her relationship with Peter. (Goodreads)