Welcome, MB. As the mother of an addict myself, I understand how your mother feels but putting ourselves in harm's way to try to save them, is futile and won't change the outcome and will only make us very sick in the end. I tried for years and years with my son and almost died in the process. Some things are simply out of our control and addiction is one of them.
You are right to be concerned about your mom. Can she attend any meetings? CoDA, Al-anon and Nar-anon are three similar fellowships that have helped many of us find our balance again and learn to take care of ourselves...regardless of how our addicted loved one is doing.
My prayers go out for you and your family. Addiction is harmful to so many people besides the addict themselves.
Hugs