When we know better we do better. Now you have facts instead of allot of unexplained and questionable issues.
Your marriage began on a foundation of secrets, a crumbling structor. Only you can decide if you want to wait around and patch up that foundation with the mortar of her sobriety and hope it holds. Or release the both of you to re-build your lives.
Keep in mind that right now today she is in the comfort and surrounded by a safe environment with professionals, of course she is feeling great. Her hard work really won't begin until she is released and left on her own to work her own recovery.