Bad Influence

So I guess I am offically a bad influence on my little sister. I let her drink some of the vodka I have hidden at my house and she was totally an idoit and drank it at my house. If theres one thing the kids in my family know it's that you never drink at our parents house because they will ground you for life. I honestly think she's doing this stuff in hopes of getting caught and spiting them. I've decided I'm no longer going to help her with this. If she wants to drink at school with me. Fine. But I'm not going to help her self destruct at home.