The perfect little angel to most adults, Nanette is a devious, shrewd, arrogant, snobbish, and mean girl, exercising the worst of her traits on Angela and her friends, though she has shown the capability to be a very sweet person. The only known instance of this is in the episode "Secret Santa", where Nanette gets Angela an imported French cashmere scarf. This former personality, though, likely is the fault of her doting parents (who are snobs themselves), who fail to see how terrible their daughter really acts at school and never punish her for things she does wrong because they are also horrible like her daughter.

She is very proud of her looks, constantly bouncing her golden curly hair and she considers herself to be very beautiful, which may be true as her mother is very lovely. Nanette uses her family's wealth and high status as a way of asserting her superiority over her classmates, especially and specifically Angela and her friends. Unlike most teacher's pets, who loves the teacher and want to study more, she only uses Brinks for power in the classroom and her school life.

She is manipulative and has Mrs. Brinks wrapped around her finger with constant devotion and gifts, although Mrs. Brinks has had moments of anger with Nanette, such as the ending of the episode "Return to Sender" after learning the truth about being a pawn (and "being un-French and uncouth"), giving her detention when Angela read an insult that Nanette wrote about Mrs. Brinks ("the other horriblé thing at my school is my very un-French, uncouth teacher who luckily I am able to play like a viola, which is French for violin"), and in the episode "Earhart's Heirloom" where she accidentally called Mrs. Brinks' birthday "nothing" and gets Mrs. Brinks angry.

Additionally, Coach Rhinehart (Gordy's father) has gotten angry with Nanette once as well; after finding out that she has been lazy the whole time she is appointed as Team Thistle's captain, he punishes her by making her carry every single one of the other kids' bags back to the school bus.

Because of her French heritage, Nanette arrogantly believes that she can always understand French. She often sprinkles her conversation with misapplied French phrases, explaining their meaning incorrectly; for example, she believes "liaison" (connection, binding) is French for "lesson", "crème brûlée" (singed cream) is French for "prove it", "pomme de terre" (potato) is French for "apple polisher", and "Crêpe Suzette" (Suzette's pancake) is French for "overpriced pancake". She also claimed that the word 'viola' is French for 'violin', when in fact they're two different instruments - the actual French word for violin being 'violon'.

However, she uses correct French words and phrases in other instances. For example, in "Angela Who", she orders a large pizza "maintenant" (which is French for "now" or "right now"), and in "Puppy Love", she uses the French word "perdu", which means "lost". In "The Substitute", she uses a Japanese phrase, strongly implying that she may just be a girl that loves languages.

SPECIAL THING FOR THIS!:
In this series, SHE WILL BE FAKE FRENCH, REAL BRITISH, IF YOU CAN, GIVE HER A BRITISH ACCENT, IF NOT, ADD A FAKE FRENCH ONE, IF YOU CANT DO BOTH OR EITHER, THAT IS OKAY!