Just curious, have you tried a canned-only diet with the kitten? One that is single protein,grain-free and carrageenan-free?
I ask only because we have taken in several cats over the last year or two that are completely dry food intolerant. Some require limited ingredient diets, and others can pretty much eat any grain-free, carrageenan-free canned food.
Also, depending on the resue/shelter you adopted her from, they may not have know she had an issue, or didn't feel a need to share. I work for a rescue myself and I am always baffled when another rescue/shelter chooses to send cats with known problems without relaying the info to new owners.
As far a GI issue that isn't parasite/protozoan related...
You could have her checked for IBD or a malabsorption disorder (the latter typically produces a greasier stool). Has the vet ever tried her on a steroid?
I ask only because we have taken in several cats over the last year or two that are completely dry food intolerant. Some require limited ingredient diets, and others can pretty much eat any grain-free, carrageenan-free canned food.
Also, depending on the resue/shelter you adopted her from, they may not have know she had an issue, or didn't feel a need to share. I work for a rescue myself and I am always baffled when another rescue/shelter chooses to send cats with known problems without relaying the info to new owners.
As far a GI issue that isn't parasite/protozoan related...
You could have her checked for IBD or a malabsorption disorder (the latter typically produces a greasier stool). Has the vet ever tried her on a steroid?