My cat has an extremely bloated upper abdomen.?

i'm no doctor but it might be "Ascites." It's an abnormal aculation of fluids in the peritoneal (abdominal) cavity. Congestive heart failure and liver failure are the most common causes. but not being there and not feeling the cat myself i can't be sure. it's good that she's still eating. when cats stop eating it means the end is near. take her to the vet regardless of what your parents say.