When someone is on drugs, he is emotionally unavailable. Period.
She has likely experienced deep loneliness in her relationship with you. And your fog has been too thick to know it.
My guess is that she's exhausted by her unhappiness and loneliness and just doesn't have today the energy for building a relationship with you while you begin your recovery.
If I were her friend, I would tell her a one-year separation while you work on your recovery would be best. Maybe your friends might suggest that to you as well.
Addicts in their active addiction are usually oblivious to other people's needs and are usually uninterested in meeting those needs. As codependents in relationship with addicts, our gut tells us this and it hurts.
Your recovery and your new honesty is a start toward a meaningful life and eventually a meaningful relationship with someone. I wish you good health and much support in sobriety.