Hey, Suncatcher. Thanks for your post. I have a similar situation with my alcoholic sib and my mother. They are a pretty classic co-dependent duo. I have a lot of Al-Anon under my belt, which is helpful in dealing with the inevitable anger and resentment that I experience from time to time. I have also set boundaries, in that I limit my visits to the house. Now, in my case, the substance of choice is alcohol, which isn't illegal. The legal ramifications of your mom's helping your addict cousin shouldn't be ignored, but...at the end of the day, it is her choice to make. Peace.