Hi Christine!
That's a great question. There are a lot of things that she can do in Walt Disney World, including shows and attractions. You can get more information about traveling with young children by going to this
link. Very few of the attractions at Walt Disney World have a height requirement; those that don't are open to everybody! You can see a list of height restrictions by going to the independent website AllEars.Net. Just google "All Ears Height Restrictions" and it will pop right up.
Your daughter will be able to enjoy most of the parks with you. I know that may sound strange if your only experience is with regional amusement parks, but it is true! Walt Disney World was designed with the whole family in mind!
I would definitely visit all of the theme parks, especially Epcot. I say especially Epcot, because young children (but in the range of 3 to 7) don't usually like the World Showcase portion of Epcot, which is usually a favorite of adults! It will be easy for you to bring a baby with you there now!
I hope this helps! Write back if you have any more questions!