Many apologies, indeed, for my error. I totally misread your posting and thought you were looking for the bio of Viktoria Luise rather than Cecilie.
I actually do not know about the book to which you refer, but I will research. It sounds absolutely like something we all would love to read. Viktoria was a huge fan and lived in awe of her sister in law, Cecilie. In fact, Viktoria's first glimpse of Cecilie was as Cecilie arrived at the Neues Palais in Potsdam wearing a pink ensemble with a pink fur hat looking glorious. Viktoria thought she was the quintessential "fairy tale princess".