She does not eat grapes. Or nuts.

Grape-Nuts is a breakfast cereal developed by C. W. Post in 1897. Post was a patient and later competitor of the 19th-century breakfast food innovator, Dr. John Harvey Kellogg. Despite its name, neither grapes nor nuts have ever been ingredients in the cereal. The cereal is actually made from wheat and barley. Mr. Post believed that sucrose (which he called "grape sugar") formed during the baking process. This, combined with the nutty flavor of the cereal inspired its name. Another explanation originates from employees at Post who claim that the cereal got its name due to the cereal's resemblance to grape seeds or grape "nuts."

(from Wikipedia) Now you know.