First of, thanks for being such a good guy/friend and your question. I seriously doubt that she will be wearing Organza to work every day -- like most Givenchys it has a superb lasting power and despite its name it is not weighless at all. Quite the opposite -- Organza is a heavy spicy oriental scent on a sweet vanilla base. She would either use the miniscule amounts of it or skip a day or two. Otherwise, her co-workers will suffer even in an open space where they wash/inspect the boards.
What else? A trip to the mall for testing, sniffing, spraying and having fun. A bunch of samples brought home from that trip to further test and decide. An order of other samples from online stores like Scented Monkey, Aedes, LaCreme Beauty and Luckyscent. A converstaion with her about what she likes in Organza -- its snuggly character or its boldness and spicyness.
Depending on her answers, you can go with other enveloping cuddly scents like:
Boucheron Initial, Trouble and pour Femme,
Chopard Casmir, Wish,
Lancome Hypnose, Hypnoitic Poison, Midnight Poison,
L'Artisan Jour de Fete, Vanille,
CSP Matin Calin,
YSL Opium, Cinema,
Chanel Coco, Allure Sensuelle,
Donna Karan Cashmere Mist,
Patrik Mauboussin pour Femme,
CDG Sweet Series,
or go in a totally different direction with a light floral/green/citrucy scent
L'Artisan La Chasse Aux Papillons, Drole de Rose,
most Annick Goutals,
Estee Lauder Pleasures,
Dolce and Gabbana Light Blue,
Guerlain Aqua Allegorias,
Elizabeth Arden Green Tea, etc etc etc.
Good luck and pelase let us know what you guys have decided on!