If her diet consists largely of human
food then my suspicions are going to lie in the direction of
pancreatitis, an inflammation of the pancreas. The pancreas has the responsibility of producing enzymes needed for food digestion and it also produces insulin, a hormone necessary for glucose and amino acid uptake and storage. When the pancreas becomes inflamed, these digestive enzymes begin to leak from it and the pancreas literally begins to digest itself. It CAN be life-threatening.