What do I do about my sister?
My big sister's boyfriend is going to ruin her life but she's to blind in puppy love to see it, he's been taking prescription drugs from our mom's pharmacy and selling them, he makes her sneak out of the house. She doesn't want me to tell our parents because she knows that our dad wouldn't let her see him anymore, she makes me feel like a bad sister when I tell her that he's using her. he acts like a saint around our mom and dad saying yes sir and yes mam, I know he's afraid of my daddy most people are he's a 6'3 retired marine and he just talks in that military voice. I want to tell so bad but I don't know how, we eat as a family every night my sister has become as manipulative as he is, she talks like an angel in the company of adults but runs around after school buying pregnancy test and helping her boyfriend sneak pills from the pharmacy. I know sooner or later she's going to get caught my mom is catching on to the missing medication and my dad is asking me many times a day where my sister is, I don't lie to him because she doesn't tell anyone where she is. I don't want to attend my 17 year old sister's funeral how can I tell my parents?