There are outward signs that can lead you to suspect she has ulcers, but only a vet can give you a proper diagnosis.
I feed the beet pulp pellets, and he gets them dry. They're pelleted, so are only a little bit bigger than regular pelleted feed. He eats them just fine.
If you're going to feed it wet, you need to measure out dry how much you plan to feed her, then wet it down. Once it's expanded, drain off the excess water and give it to her.
A coarse feed is just that, coarse. Doesn't mean it's complete.
Blue Seal Charger doesn't indicate that it's a complete feed, but it's close based on the ingredients. It has beet pulp, rice bran, flaxseed, vegetable oil and coarsely ground corn as well as extruded protein nuggets.
I've had trouble finding Triple Crown Complete, and Charger is a decent substitute. It's also about 4 dollars cheaper a bag than TC Complete, so I save some