S.R.
There is one section of Disneyworld that is just like the Disneyland you are familiar with in Southern California. There is a train that goes around the park. I agree that Epcot and MGM would be too old for her. Try the Animal Kingdom and if it's not working, hop on the train and head for familiar territory--the Magic Kingdom! Don't forget to get the autograph book. She's at a great age to spend a good part of the day running around getting autographs from the characters and her picture taken with them. It helps in avoiding the long lines for the rides. One note, the pens they sell with the book aren't that reliable. Bring your own pen.