Hey Man!true indeed
If you want a good food for a good price that has worked for my bully (who has crazy stomach issues), try out the Pro Plan Sensitive Skin and Stomach. It's a black and pink bag, comes in 35lbs for just under $50. It's probably even cheaper in the states.
It's a limited ingredient diet so dogs don't react to all the "extras" that many companies put in the food (fruit, veg, different meat and starch sources, etc).
This is ONLY salmon, Rice and Oatmeal.
My Bowser was on Royal Canin as a pup and it destroyed his immune and digestive system. The Pro Plan SS&S did wonders for him and he has very firm poops.
Give her a try! If not, then I recommend the Natural Balance Sweet Potato and Fish that Morley is on. It's far more pricey however.
All the best!