My 22 year old nephew is a drug addict and no one in my family is talking about it. His parents know about it but are enabling him in some ways. They allow him to live in their home with an impressionable 14 year old sister and work in their business. I need help in how to help them. I love them so much and don't know what to do but can't sit by pretending that nothing is wrong. Any advise would be appreciated.