From the experts:
Odette is the good swan in Tchaikovsky's ballet Swan Lake, a role for which Natalie Portman won an Oscar ---and it would make a particularly soigne, sophisticated yet upbeat choice, unlike some of the more dated other 'ette'-ending names.
Odette de Crecy, is the flamboyant wife of Charles Swann in Proust's A la Recherche du Temps Perdu.
The name became publicized during World War II via the courageous French Resistance heroine Odette Brailly, who risked her life to supply information to the Allies, was captured by the Germans, and wrote her story which was retold in an eponymous film.
Actor Mark Ruffalo chose Odette for his daughter.
Variant Odetta is associated with the folksinger who was one of the first to go by a single name.
Odile, who is Odette's evil Swan Lake twin, gives her name a sinuous, sensuous appeal.