Hey Kim, just had a few minutes before my next meeting and looked gastroparesis diet up and found this:
Symptoms may be aggravated by eating greasy or rich foods, large quantities of foods with fiber—such as raw fruits and vegetables—or drinking beverages high in fat or carbonation
Not sure Carnation Instant breakfast would fit the diet. Also, depends what you mix the protein powder in with. Milk with fat might not be good. If she doesn't like the taste of Boost or Ensure I would guess a protein powder mixed with skim milk would not be palatable.
Also found this:
Eating, Diet, and Nutrition
Changing eating habits can sometimes help control the severity of gastroparesis symptoms. A health care provider may suggest eating six small meals a day instead of three large ones. If less food enters the stomach each time a person eats, the stomach may not become overly full, allowing it to empty more easily. Chewing food well, drinking noncarbonated liquids with a meal, and walking or sitting for 2 hours after a meal—instead of lying down—may assist with gastric emptying.
A health care provider may also recommend avoiding high-fat and fibrous foods. Fat naturally slows digestion and some raw vegetables and fruits are more difficult to digest than other foods. Some foods, such as oranges and broccoli, contain fibrous parts that do not digest well. People with gastroparesis should minimize their intake of large portions of these foods because the undigested parts may remain in the stomach too long. Sometimes, the undigested parts form bezoars.
When a person has severe symptoms, a liquid or puréed diet may be prescribed. As liquids tend to empty more quickly from the stomach, some people may find a puréed diet helps improve symptoms. Puréed fresh or cooked fruits and vegetables can be incorporated into shakes and soups. A health care provider may recommend a dietitian to help a person plan meals that minimize symptoms and ensure all nutritional needs are met.