Her intestinal troubles started after what? And yeah, if she's getting grains elsewhere then grain free dry may not help. Or it might, considering how poor quality Meow Mix dry is.
Also, I'd consider limiting ingredients as an overall. Is raw or home-cooked an option? I ask because it is the easiest way to find out if chicken for example is bothering her. Feed chicken exclusively for a week or so and watch. Symptoms worseen? Lay off chicken. Symptoms get better? Let's move forward from there.
No, your vet isn't going to like raw. But so far her answers to this leave a lot to be desired.
Also, I'd consider limiting ingredients as an overall. Is raw or home-cooked an option? I ask because it is the easiest way to find out if chicken for example is bothering her. Feed chicken exclusively for a week or so and watch. Symptoms worseen? Lay off chicken. Symptoms get better? Let's move forward from there.
No, your vet isn't going to like raw. But so far her answers to this leave a lot to be desired.