Thank you for the update! I am not trying to oversimplify your cat's issue, so please don't take it that way. But, has this come down to a dental problem overriding at least some of the allergy issues? Something along the lines of stomatitis? I am sure there is a level of complexity that I am missing, but I am so surprised that no one until this most recent vet came up with a dental issue being a possible source of part of her woes.