Who's in charge here. I understand that the young child wanted Sonic, but I empower you to say "NO". Look for an opportunity to not only show who's the boss but make it a game, have fun, introduce her to different options. Make a lunch and go to the park. Visit alternate restuarants. I take my grandaughter to Macdonalds but also to the local Tea Shoppe, Italian and Asian resturants. She is 2 and 1/2 and knows grandma won't put up with bad behaviour. Other then a visit to the Rain Forest Cafe( melt down, scared of the apes) she is well behaved and is learning patience, manners and appreciation. All the best