Below I am giving two choices in order of my rankings for table service and counter service in the parks, since I am not sure how many days you are doing at each park. I am also listing table service restaurants at resorts in order of my rankings to try. I have also listed at the bottom of my post a link to the menus to Disney World restaurants so you can view them all. The 5 choices I put in my overall top choices would be my MUST DOs for your group.
Magic Kingdom:
(table service) - 1. Crystal Palace for breakfast. Make ADR for a time before the park opens. You will be able to get pictures of the castle without people's heads in the photo. Crystal Palace has good food and great character interaction. They also every 20 minutes do a show around the restaurant and include the kids.
This is my number 4 overall choice.
2. Plaza 2nd best table service restaurant in MK. However, I would go to Kona (listed below as my number 2 choice for resort restaurants) at the Polynesian over the Plaza for much better food and value on the dining plan.
(counter service) - 1. Columbia Harbour House - It has good seafood selections. If your daughter likes seafood this counter service is the best counter service for seafood.
2. Be Our Guest lunch is counter service.
Epcot:
(table service) - 1. Askershus Princess Storybook Meal. Since you are planning a princess meal this is the one with the most princesses, best interaction with them, and in my opinion the best food of any of the princess meals.
SINCE IT SEEMS YOUR DAUGHTER IS A BIG PRINCESS FAN THIS IS MY NUMBER 1 OVERALL CHOICE.
2. Via Napoli has the only good pizza in my opinion in the parks.
(counter service) - 1. Tangierine Cafe (Morocco) I love their lamb dishes.
2. Sunshine Seasons has the best variety of counter service in any of the parks.
Hollywood Studios:
(table service) - 1. Mama Melroses has good standard Italian fare.
2. 50's Prime Time Cafe has good food and usually very good antics.
(counter service) - 1. Backlot Express
2. Starring Rolls Cafe
Animal Kingdom:
(table service) - 1. Yak & Yetti Restaurant there fried wonton desert is delicious.
2. Rainforest Cafe has lots of animals and a show every 20 minutes (if loud noises do not scare your daughter this is a good choice).
(counter service) - 1. Flame Tree Barbecue good barbecue food.
2. Yak & Yetti counter service
Resorts (all table service choices):
1. Sanaa at Animal Kingdom Lodge has very good food and only restaurant you can view real animals while eating. Go during lunch or around 5 PM for dinner to better insure the you get a window table. Also, make sure to go while it is light outside.
This is my number 2 overall choice.
2. Kona Cafe at Polynesian Resort has a great breakfast and dinner menu. It also has a good lunch menu. I would try to go for at least breakfast here. This is the BEST BREAKFAST period on Disney property. If you can also swing it go for dinner or lunch as well. This restaurant is very convenient as it is on the monorail line and very close to MK. It is also a monorail trip from Epcot.
This is my number 3 overall choice.
3. Beaches and Cream at Beach Club has excellent ice cream choices and good burgers. This might be a better option than the restaurants at Hollywood Studios especially if your daughter is an ice cream lover.
This is my number 5 overall choice.
4. Landscape of Flavors food court at AOA. I have heard all good reviews about it.
http://www.themouseforless.com/tripplanning/menus/wdw/menus.shtml