You sound like you are strong and doing the right thing.
It's so difficult to listen to the desperate pleas, in their voice, saying how "hungry, tired, in pain, lonely, etc." I have heard it from my young adult children. I also have a husband in recovery.
They are desperate! I can only imagine. Addiction is a lonely, dark place.
I have many meetings, that I have attended with my husband this year. It helped me listen to the voice of addiction and addiction in recovery. Most addicts will say...it's the desperation that helped them get into recovery.
Once I heard them say how desperation was a catalyst for change. I know I was doing and did the right thing regarding letting go.
I wish you strength and peace.