Hi Newguy
Such a sad story. Addiction is so destructive.
No, you're not wrong to want to cut ties with your sister. You can't save her. She has to want to save herself, and she doesn't seem to want to change her life.
We get to a point where we have to save ourselves, or our loved ones addiction will take us down too.
Think of yourself, your wife and family.
Much Love
Bute x