((DW)) Think of it this way...it's better to have a divorced or separated family than bringing your girlfriends home when you are sixteen to find your dad high or overdosed in the bathroom...
She doesn't understand just now but she's also not working on with the full story. By 12 I had heard most of the bad stuff about my Dad (he got into recovery when i was five) and it helped me to understand him better. It also helped keep me AWAY from substances at that age when lots of kids start experimenting.
You have come VERY far in a short time and you are doing AWESOME!! Keep it up!