any,
There is a book called "Codependent No More", by Melody Beattie. I suggest very strongly that you read this book (or listen to it in audio format). My daughter was a young woman, probably around your age the first time she read it. It was a life saver for her, it was for me too, I only wish I'd read it at your age and not 20 years later. please consider reading this book. It will explain things you hadn't even questioned and will teach you things to help yourself become stronger and calmer. Loving someone with addiction issues is rough stuff, "Codependent No More" can give you some tools to make it a little less stressful. I'm a better person, living a better life because I read that book. (Many times)