My 28 yo brother is currently in ICU with a diagnosis of respiratory failure. He is a heavy smoker with asthma, COPD, sleep apnea, chronic bronchitis, and yearly pnuemonia and/or pluerisy. He has broken 6 ribs once from coughing so hard. He is a big guy, he weighs alot. If she has weight on her or any one of the factors that my brother has, like the apnea, I'd suggest getting her on a c-pap(?) machine to increase her night time oxygen intake. Exercise (cautiously) and practice deep breathing exercises(!!!). See a homeopath, they can cure asthma, she needs a really good practitioner. Keep me posted!