Little background, my brother is 18 and dabbles around with drugs and has super bad behavior. We think he has bipolar disorder and is super disrespectful towards my mom who he lives with. I am a psych major and in college living alone, my mom constantly complains about my brothers behavior. We have grown up with some family issues and my mom has had abusive boyfriends. Anyway, my brother asked me to buy cigarettes and I refused because I don’t condone self destructive behavior, my mom met my brother at the gas station and supplied him with it. She seems to not realize it’s wrong although I think deep down she does. She smokes herself. I’m so mad and don’t want to speak to her, am I in the wrong?