Elizabeth Lavenza is the orphan child taken in by the Frankenstein family, who was lovingly raised with Victor Frankenstein; she later becomes Victor's wife and is killed by the monster on their honeymoon. Elizabeth was the daughter of a Milanese nobleman and a German mother. She was found living with a poor family near Lake Como. She was granted land, where she and Victor honeymooned, around the time she was getting married. Elizabeth is the one who keeps the family together after Caroline dies. Elizabeth survives the scarlet fever plague that takes Caroline. She writes to Victor while at school and tells him what is going on with the family. She is the source for information for Victor when he is away at the university. Her letters are important in the plot of the story.
Elizabeth also represents a character much like Mary Shelley herself, by aiding the poor, respecting all classes of common people, and coming to the assistance of Justine Moritz, when Justine is accused of murder. Elizabeth was a happy child and had a positive outlook on life. She is an innocent murdered merely for revenge on Victor.