Hey there.....welcome to SR. This forum is a great resource with a tremendous amount of collective wisdom.
You're in a tough spot. You are the primary provider/caregiver for your mother, twin babies, and a man-child. That's a lot to handle.
Focus on yourself and the babies and keeping your head on straight. Unfortunately living with and loving an active addict can sometimes make us crazy and spiral into an abyss with them.
If you are unable to go to meetings, you can still get your hands on some of the literature from Naranon. I find the daily readers are very helpful. You can order literature from Naranon below:
http://www.nar-anon.org/Nar-Anon/Nar...22.2010%29.pdf
I hope you stick around and find comfort here.
gentle hugs