I am delighted by your fabulous guesses and
(associations d'idées). Yes, I too looked up 'quainttrelle(s)'. Coco Chanel and Marlene Dietrich
inter alia are apparently counted among them. U'm sure,
JoanK, there were (and are) others out there.
Brava,
Frybabe! Mind-stretching is good for the soul, I think. Also, I agree that we should never fail to consider women's contribution to the arts. However,
the author of this book was a man.
Roshanarose,
pedln was right, the era is the twenties.
Our author's picture graced the cover of TIME at the time. Rosemary, Elizabeth von Arnim would have been a perfect match for
Enchanted April (1922), except she was not the author of the book in question here. BTW, there was another Elizabeth von Arnim née Brentano. Her husband, Joachim ("Achim") von Arnim, and Bettina's brother, Clemens Brentano, belonged to the
Heidelberger Romantik. (The preposition "von"between first and last (name(s) denotes nobility and generally appears in lower key.)
More clues
The author's first writing appeared under his birth name. His parents had expected him to have a university career, but he soon turned to writing full-time.
He changed his name and became anEnglish subject,
One of his psychological thrillers was adapted for a segment of the TV series
Alfred Hitchcock presents.
After having achieved fame and fortune with the novel, he wrote mostly political essays.