I went through my shelves once more to find covers in which a woman is holding a flower in her hands. And I did a little happy dance because finally, at last, I thought I found at least a single book on my read shelf which fits the criteria.

 

And then I did take a closer look at the cover:

 

Alles muss versteckt sein - Wiebke Lorenz 

 

Yep, epic fail ;D.