There can be many causes of chest pain
. It could be because of lung conditions, heart conditions, conditions in the abdomen, because of pathology in the ribs and spine, because of muscles and cartilages of chest and because of various nerves supplying the organs and chest wall. So you can understand it`s not possible to come to any conclusion as to the diagnosis of pain that you friend is suffering from esp in want of adequate input. I`ll suggest, she should consult a physician who will examine her and then advise her accordingly.