My problem with the dining plan and an 11 yr old is that she doesn't like traditional kids menu foods (chicken nuggets, mac and cheese, hamburgers, spaghetti, etc.) but she doesn't eat an adult portion either. What we finally did for most regular TS meals was just use 2 credits then we shared the meal betweem the 3 of us or dd ordered something a la carte. We used the extra credits for signature dining. Overall it worked pretty well for us--we didn't waste food, everyone was well fed and ordered things they liked. Something like that may work for your dd.