thank you guys for your input. i have been thinking about going to al-anon and trying to get my parents to come with me, but i don't think either would come. i've spoken with my dad about how my sister dealing out of the house could lead to some very bad situations but he just closes up whenever i talk to him about her. i'm starting to come to terms with the fact that i can't control or cure her addiction, but i can't help feeling like we are supporting her behavior because my parents still let these things go on in their house.