Yours is a fine example of "detaching with love" LMN. We can encourage them and always care about them from a distance. Because we care about someone doesn't mean we need to remain in a relationship with them, whether it is a spouse or a son or a brother...we can care without involving ourselves in their addiction or recovery.
I remember something said by an dear early member of SR, Just Tires or JT as she became known as. She said "Detaching with love means not squealing your tires as you drive away."
That means we can detach without blaming or shaming or throwing a guilt trip on anyone, we can simple pray for them, wish them all the best and let go of our need to control what they do or don't do next.
Your recovery is shining girl!
Hugs