The best way to determine if NC is for you, is to try it.
You have a few options:
Delete texts and phone messages without listening
OR
Read and listen to messages without responding.
I hope you have your sense of humor intact, because I got a giggle when I read this in your post: RAHGF (recovering alcoholic husband girl friend)
I know you meant your RAGF (recovering alcoholic girl friend) but it made me giggle. Hope you smile some today too!