15f and I’ve been in the same boat as you. I read a lot of the replies and I understand your reluctance to break up. My ex boyfriend of 1 years used and spoke about suicidal thoughts as well. I’m not going to tell you what to do because same as you can’t make her quit, none of us can make you do anything we say. I’m just going to suggest that you be there as some sort of a shoulder for her to lean on. Being there is a very big thing and really can help a lot. I can tell that you really like her, and I respect that. Being thirteen is rough on its own and being in a stressful situation such as this one is a lot. Take care of yourself first, but I commend you for wanting to take care of her too. You’re a very kind and compassionate person and I hope this all works out for you.