Toki has always done well on Fromm! I'd also look into Acana and Earthborn. In terms of foods at Petsmart, we have had good results with Blue Buffalo. Toki was on the Chicken and Oatmeal for puppies and the Wilderness formula as well. While I like BB (it is more readily available in bigger pet stores), I do think that it is a little overpriced for what it is and that you can get the same quality (if not better) for much less if you feed something like Fromm or Earthborn. I hope that you are able to find a food that Emma finds appealing