My Mother Is A Very Young 83. Recently Took A

My mother is a very young 83. Recently took a trip to FLorida. A day after arriving home started with symptoms - diarrhea and vomiting for 24 hrs. That stopped. But she has had debilitating nausea ever since. 3 weeks. And becoming more and more feeble. Everything she eats makes her sick. Sometimes without eating anything she gets nauseated. She has been a type 1 diabetic since she was 50. She has a mild case of gastro paresis that has always been controlled with reglan and diet.