I don't think myself that it is tuberculosis
as there is bilateral effusion and the right fissure is prominent. This is seen in cases of fluid overload which commonly is due to either a cardiac disease or some renal disease
You shoud do a cardiac study like 2D echo to evaluate the heart and serum creatinine
for renal disease however a complete check of the liver
and renal profile would be better.
Fever may not be due to lung disease but such a high fever
for 3 months cant be an infection or she would have been very toxic by now.
Evaluate for diseases like SLE and RA and Sarcoidosis