I'm not a doctor but she said she can't eat e.g of pasta because of gluten protein. This may refer she is having celiac disease Btw, symptoms of this disease can be seen in other disease but if she is a celiac disease this means she has to continue her life with a special diet and special foods. She mustn't eat foods which made of wheat, barley, rye and oats.. This will change her eating habits completely. But on the other hand this way of eating will make her more energetic, more sharp and strong.. She will start to feel better!
So good to read a positive update from Sabine Important that they discovered her Gluten problem now and she can make the adjustments needed to her diet. May not be easy to adjust but there's plenty of information out there.