Kids (and adults) with ADD seem to do better in natural environments. What about going for walks and trying to see how many different critters you can spot — and don’t forget to include the little guys like spiders and bees. Being outdoors will help her overall state, and the activity of exploring and looking for new species might appeal to the novelty seeking aspects of the ADD brain. Maybe pick up a cheap camera and see how many different critters you can photograph? That will help her to learn to be still and gentle without triggering boredom.