What specific foods will help an elderly lady regain normal digestion after experiencing digestive failure?

If you are a Nurse, or Nutritionist, or Elderly Healthcare Giver; This question is particularly directed to you. Please help us help a good friend.

Her problem began with weight loss, and an inability to eat without severe discomfort. Her condition continued to worsen to the point where she could only tolerate water and fruit drinks.

Now she is saying she would like to try some solid foods again, and we are wondering which SPECIFIC foods are easiest to digest, and least likely to cause abdominal discomfort.

Thus far, she has been able to have some seedless grapes, and applesauce, without discomfort, and just now tried some plain shredded wheat. She would like to try to have eggs to get some protein and perhaps something like brocolli and or other vegetables.

Any and all advice will be appreciated as to which foods are easiest to digest, and which foods to avoid.

Please do not advise seeking medical intervention because she steadfastly refuses any, as it is against her religion. We will respect her request, and try to help her in any way she will allow.

Thankk you for your kind consideration.