Thank you all for the nice words- I concur, Robin, that it seems to have been common in some areas during the period; just how fashion works, I guess (I've never been attuned to fashion, both current & historical, myself- lol).
Her face bears a great resemblance both to her mother, & to my great-grandma Dorothy, I think, as well as my own mother, which constitutes all the known members of my maternal line except my grandmother, who looked more like her father.
Bryan- I am not certain how tall Eva was, but I'd agree that she was certainly taller than average, as can be discerned from this photo:
Not exactly the best quality, but that's Eva with LeRoy, her husband, & my great-grandmother, likely around 1921. LeRoy was 5'6", which I believe may have been around average during that time for men, whereas Eva seems taller; she could be wearing higher shoes, but regardless I think it's likely safe to say she was above the average for their time.
As for the rest of the outfit, I'm no expert; it'd be interesting to see what insight others have into it.