Did you give an update somewhere else, and I missed it? What did the vet find out was wrong? Is it a food allergy?

I went to the Denes food site and it sounds excellent, especially since it's available near you.

Solid Gold is another dry cat food that you may want to try. It has Lamb meal as the main protein source, and usually when you switch protein sources, the cat does well (along with no byproducts, corn etc.)

Brambles pics are wonderful!