Just a quick heads up, the food is served family-style, meaning that it is put on a lazy susan style dish in the middle of the table.
You would NOT be sitting with strangers, like at Teppanyaki or Biergarten.
You and your DD would be seated at a table for 2!
I would definitely give it a try if she loves the princesses - as they are all princesses here!
We've done this twice, and while the service was terrible the second time (new waiter, and while he was sweet - he was awful!), the princess interaction has been wonderful both times.
We had Belle, Jasmine, Mulan, Aurora, and Snow White on both trips.