it is not right for non medical persons to interpret Xrays on their own . In the curriculum of medicine aspecially for radiologists Xrays are the most difficult to read and must be interpreted cautiously. Wrong to give opinion on your description of white patches on chest xray. Anyways from the history you have provided, since must be having
lung infection of spread of disease to lungs from abdomen. these two are the primary possibilities and treatment needs to be done accordingly. It would be better if you stop thinking of all this concentrate on her treatment