Getting sober is one of the hardest things a person can do. It deserves to be named as the enormous achievement it is. And the marriage has its own separate work to do — work that sobriety makes possible but does not complete. Both of those things are true at the same time.
The specific grief of being in recovery and finding the marriage still broken is the grief of doing your part and discovering that the damage is larger than your part alone can repair. Your spouse has their own timeline for trust. That timeline is not under your control, no matter how consistently you show up. The waiting is its own sustained kind of hard.
The guilt from the addiction years — for what you did, what you cost, who you hurt — tends to surface more clearly in sobriety, not less. When the substance is gone, the full picture of what it did becomes visible in a way that was easier to avoid before. That clarity is necessary and it is painful. Grace is here for both.
Psalm 34:18 says God is close to the brokenhearted. The person who got sober and is watching their marriage struggle to recover alongside them is among the brokenhearted God draws near to. Not after the marriage repairs. Now, while both recoveries are still in progress.