This occurs when fluid collects in the air sacs of the lungs. Signs may include shortness of breath, problems breathing, coughs, or wheezing sounds. To make her more comfortable on the trip to Gurgaon, try to sit her up and give oxygen if it is available then keep her as calm as possible.  In most cases, drugs are given as treatment for pulmonary edema which works by getting rid of extra fluids from the lungs besides dealing with its root cause like heart failure. Proper health care can help control signs but the urgent need for a pulmonologist's attention is necessary.