hi. my mom, a 71 year old woman, was diagnosed with acute kidney failure. She started dialysis treatment for three times a week. in the past month, she had on going low grade fever. She had x-rays and CT scan. Result came back with a high number of nodules in her lung. Blood test showed TB positive. But sputum samples came back negative. They went ahead with the TB treatment. After three days, the fever came back. She is weak and considering her age, hospital recommend Bronchoscopy. what should i do next?