This is the situation for many here and lots of us have found Al-Anon very acceptable to us and we to them.
The program is basically the same, and since it is about us and our recovery, the substance that our addicts used really doesn't matter.
By all mean give Al-Anon a try, go to 6 or 7 meetings even trying different meetings if that is available to you, and find one that you are comfortable with and that you think will be best for you.
Congratulations on making a choice that will give you a wonderful program that will help you in all relationships in your life. It's all a gift, free for the asking.
Hugs