Is it normal to blame myself for someone else's actions?

I'm a teenage girl, and my dad is an alcoholic. I hate being at home with him because he just stresses me out. He can be picking me up from basketball practice or piano lessons, and half of the time, I don't even know if he's sober or not. I refuse to get into the vehicle with him and walk home sometimes. I've either been barely sleeping or I over sleep, so I'm always tired. I live in a small town, so there's no one I can really talk to because I'm not really that close with my family.