Hello,
I am new to the site and just read your story. I am deeply sorry for the loss of your mom and dad. From what i read your mom seems to be an incredible person with many achievements. Reading about your sister made me think om my siblings and I when our mother passed away two years ago. I know you don't understand why your sister has changed for the worse, and when my mother passed my brother and sister didn't seem as hurt as me, my sister started relying on alcohol more and more. I soon realized that even though we we all had the same mom, we didn't all have the same relationship with her. each one of us felt differently about her and our reaction to her death very different. I am the one taking her death the hardest and it hurt me for a while because i felt like they didn't care as much. However i know now that's not it. Everyone grieves differently. Maybe your sister hasn't chosen this path, but her grief has pushed her down this path instead. Maybe sitting down and talking things out, sharing how you both feel, can help you guys better understand each other. I hope you guys find some sort of comfort in knowing you are not alone.