Question:
She's a 40something years old, works in a very formal job, always wears with class and understatement. Despite this conservative surface, she enjoys rock clubs, looks much, much younger, and is very, very sexy.
By the way, she wears a Victoria's Secret fragrance (don't remember what), but I would enjoy if she tries more sophisticated (perhaps a french classic)stuff.
One more thing: she's divorced, and has a child.
No niche, please.
Thanks in advance.

Answer:
What about Gucci edp; it is not niche; but it has personnality. I'm 40 something and rather fond of it.

Answer:
You're GF's profile sounds a bit like me. You didn't specify, day or evening scents. So for some easier to find and wearable scents in warm climates, I'm thinking:
- anything chanel (Bois des Iles, Coco, Chance, Allure Sensuelle)
- most guerlains (Mitsouko, Shalimar, L'Instant)
the following designer fragrances are also easy to wear for day or evening:
- Prada or Prada Tendre
- Armani Sensi
- Bulgari for Women
- Ange or Demon
- Flower by Kenzo

Answer:
Gucci edp was the first one that came to mind for me too.

Answer:
Give 'Narciso Rodriguez Her' a sniff - its refined, chic and dead sexy!
Please let us know what you decide on. Good luck!

Answer:
Paco Rabane Calandre

Answer:
Fleurs d 'Oranger by Serge Lutens, supersexy young uplifting orange blossom
Rose Barbare by Guerlain, feminine fun breezy luxurious rose
L 'Instant de Guerlain, sensual sophisticated modern classic
Rose Ikebana by Hermes, summery high end grapefruit rose

Answer:
Chanel Coco
Annick Goutal Songes
Agent Provocoteur Maitress

Answer:
How about Allure Chanel?

Answer:
Meet her for coffee, escort her to the nearest fully stocked perfume counter, spritz with any of the aforementioned (all excellent suggestions in my experience) and you guys choose together - your treat! (Make sure she spritzes - don't rely on scent strips. Take a few coffee beans along with you for between-sniff clearing!)