Yvette and her mate Henri are brought by the Volturi to witness the Cullens' destruction as punishment for creating an immortal child. They eventually find out that the supposed immortal child is a half-human half-vampire hybrid. When Aro explains that the child poses a threat to exposing their secret to mankind, Yvette and her mate seem easily persuaded, but when another hybrid, Nahuel, describes his traits and how he has managed to stay hidden in their world, Aro declares that the child poses no threat to them after all. After the situation was cleared peacefully, Yvette and her mate leave the field with the rest of the Volturi and witnesses.
Yvette is noted to have curly dark-brown hair and a head shorter than her mate Henri.
Janelle describes her character as a "French bad-girl vampire".