Yes. You should find Tofutti ice cream and Rice Dream at the Main Street Ice Cream Parlor in the Magic Kingdom. Many of the sit down restaurants, including 50s Prime Time and Boatwright's, carry Tofutti ice cream. Spoodles has chocolate tofutti ice cream with berries, for example.
For more of your allergy concerns, please make sure to note your daughter's allergy on all of your Advance Dining Reservation. This will help alert the Chef.
Also see
here for more information on special dietary needs!
While touring the parks and for help at the quick service/counter restaurants, please ask for a Dietary Request Reference Sheet from Guest Services.
The following counter service locations were listed as having Tofutti or rice cream:
Dino Bite Snacks in Animal Kingdom, Hollywood Scoops in Hollywood Studios, Liberty Inn and Plaza Ice Cream Parlor at the Magic Kingdom