Esther was the wife of The Great Raymondo.
The Great Raymondo told Lisa that only Esther could learn his most famous trick, "The Great Milk Can Escape", and she was his assistant. He and Esther never had children and he wants the magic to live on when he dies, so he showed Lisa how to do the trick. Later, during his and Lisa's show, he took a dose of ether and breathed it in. Esther appeared in front of him and they started dancing together.