hey trish!! good to hear another update from you.
As for the situation with your family, im not going to give you advice about it, I dont know your family dynamics. With that being said, I just want to ask you a question.
What do you think would benefit your grams and entire family in the long run? You staying as long as you possibly can in rehab, learning coping tools, building new sober friendships THEN coming out when you are positive that you have a solid foundation of recovery, or, rushing yourself a bit because things arent ideal for your grandma and then possibly relapsing and starting the cycle all over again. At the very least you should just think about it and discuss it with your counselors at rehab and see what they think.
Oh and on a sidenote, I totally know what you mean about the getting high after having been in NA. All our drugs are now cut heavily with the Narcotics Anonymous program hahaha. ~~ Scott