Edwina, the dinosaur who didn't know she was extinct

Edwina is well-known in her neighborhood, she plays with kids, she bakes delicious chocolate chip cookies and helps old ladies cross the street. She is well-loved by everyone except for one person: Reginald Von Hoobie-Doobie. He knows for a fact that dinosaurs are extinct and tries to convince everyone that they are. What happens when Edwina finds out?