BARF (bones and raw food) model of feeding.
It's a raw food diet and you make the food yourself, as long as you know how to get the right nutrition into the food you can keep all the foods that cause digestive issues out.
ADD:
Pros:
More closely resembles a dog's natural diet. May resolve chronic problems such as allergies, digestive disorders, diarrhea.
Very palatable.
Raw bones keep dogs' teeth clean.
Free of preservatives and chemical additives.
Rewarding for owner if the dog thrives on the diet.
Cons.
Time-consuming to prepare (although frozen and dehydrated options are much easier).
Inconvenient, especially when traveling(dehydrated options work well for traveling).
Dogs can react adversely to bacteria and/or parasites that could be present in raw meat.
For this reason many vets advise against the BARF diet.
Preparation can be repugnant for some owners, and people must be careful when handling raw meat to avoid bacteria (again, frozen and dehydrated options are easier to handle).
Vegetables and fruits must be finely ground to be digestible.
Frozen and dehydrated options, while easier, can be more expensive and take up more storage space.
Personal add, you can make the foods in bulk and freeze the meals yourself, this way it's still as cheap, easy to get since you only have to thaw the food, and the freezing kills all the bacteria.
ADD: I've been looking through some books and I found this recipe, it isn't BARF but it's for sick dogs or dogs with digestive problems. It's only short term (a couple of weeks) but is supposed to help with underweight dogs and digestive problems.
Breakfast:
1 hard boiled egg, mashed
! cup cooked oatmeal
1 teaspoon eggshell powder
1 tablespoon nutritional yeast.
Dinner:
1 cup cubed chicken
1/2 cup rice
1/2 cup finely chopped broccoli or carrots
1 tablespoon flax seed oil
1 Pinch of ground vitamin C powder
ADD:
Healthy Homemade Food
Healthy Food:
Raw or cooked lean cuts of boneless poultry, beef, lamb, whitefish like cod, and fatty fish like salmon and herring.
FInely chopped or ground raw vegetables, including carrots, broccoli florets, white potatoes, sweet potatoes, and leafy greens (collards, mustard greens, brussels sprouts, romaine lettuce, spinach).
Cooked grains like rice, barley, bulgur, polenta, oatmeal and pasta.
Raw, scrambled, fried (in canola oil), hard-boiled, or poached eggs.
Bits of fruit like blueberries, blackberries, raspberries, strawberries, melons, apples, pears and bananas.
Healthy people meals like stew or soup with meat and vegetables (not onion soup or onion pieces), egg salad, and tuna salad.
Common allergies: Chocolate, onions and garlic (garlic is only a problem in REALLY large doses, in small doses it's beneficial), raisins and grapes, alcohol, corn and soy.
ADD: I was just going through my biology books and I don't think the diarrhea can be totally stopped. The large intestine is where stool is compacted and made firm since this is where water is re-absorbed.
I think raw feeding will help, but I do think that her stools will always be at least slightly loose.
A significant boost in calcium may help though, it causes the oxygen to eat away at the stool quicker, making it dusty and less wet.