Approaching families

Just a quick thought, having watched a lot of Hollyoaks recently, how would we as outh workers help that family out with Hannah's eating disorder? How ould we approach the family and what help could, or would we actually give them? How could you demontrate love in that situation, when the family are likely to push you away, and the duaghter just doesn't want to see anyone? touh, questions, but yet real ones.