Thanks for your question on Health Care Magic. I can understand your concern. She is having recurrent chest infection (pneumonia). And these are commonly seen in malnutrition and poor immunity patients. She is having eating disorder and very thin built. So all these cause immunosuppression and malnutrition. This inturn make her vulnerable to recurrent infection like pneumonia. So first of all she should be treated for her eating disorder. For this, consult psychiatrist and get done counselling sessions. For poor immunity, give her high protein diet, multivitamin tablets, vaccination like pneumococcal and Influenza to prevent recurrent respiratory tract infection. Don t worry, she will be alright. Hope I have solved your query. I will be happy to help you further. Wishing good health to your daughter. Thanks.