Nar-Anon Chat™

two days ago my younger sister bekah contacted me worried about our youngest sister katy she heard from our mother that she went to check on katy and discovered that katy and her significant other had no food and no toilet paper. my sister bekah has known for a few months about katys drug abuse with prescription pills and apparently meth amphetamines but she wasn't sure how true or how to approach the subject to me until the other day when she worried herself crazy about katy not having food. katy is 20 years old and she has completely distance herself from me and our sisters and entire family because she feels like she doesn't have our support. I have tried numerous times over the months to show katy that she has my full support free of judgement and my unconditional love but she refuses to believe me and I am worried that she is going to end up killing herself either purposely or not and I do not want to love my sister from a grave. it breaks my heart to know that our baby sister who has just really began to live her life is already digging herself a hole she cant get out of. I live about 4 1/2 hours away from her in ga she is north Carolina and our other 3 sisters live in florida. I am in desperate need of helpful advice as to get through to sister because she is so young and already bottoming out. please help!!!