My Sister Was Exposed To Black Mold. She Has Had

My sister was exposed to black mold. She has had bronchitis on and off for a year. Recently had X-Ray. The M.D stated her lungs were so cloudy he didn't know how she was breathing. (Long story, my sister isn't speaking to me so I am getting info from another sister) She is 55 years old. My mother died of lung cancer when she was 63. I am panicked. My sister quit smoking 20+ years ago. Can you reassure me that chances are she doesn't have cancer. My sister is really bad when it comes to taking care of herself and I just found out she missed a doctors appointment today.