We have to feed Chappie, very successfully, to one of our dogs with digestive problems. It is a complete food, not requiring extra mixer, so maybe Meggie is full up? Does she have treats as well?
People point out that it has a low meat (fish and chicken) content , but that could be because you are not meant to add any more carbohydrate, and that the water content is high, though I 've never compared labels with other wet brands. My maths isn't upto attempting to compare percentages between wet v. dry food because it depends how much water they need in order to digest the dry food.
In my opinion, a wholly dry food diet is unnatural for dogs and cats, but everyone here has a different experience, so you just need to slowly experiment.
Most dogs think a manky dead squirrel is the height of food heaven!!