Nin is hailed by many critics as one of the finest writers of female erotica. She was one of the first women known to explore fully the realm of erotic writing, and certainly the first prominent woman in the modern West known to write erotica. Before her, erotica acknowledged to be written by women was rare, with a few notable exceptions, such as the work of Kate Chopin.
Boreas - I didn't fully understand the clue (Madame Nin's collection to brood over) but this was one of my last few answers, so I stuck my answer in anyway.