Is your wife going to rehab after detox? If so, there most likely will be family groups there as well as counseling sessions with her counselor, you, and your wife. Those can really help you sort things out. Nar-anon and Alanon can also help. Going into detox is just the first step and your wife has to be committed to everything else needed for recovery. Agree with what others have said that only you can decide whether to leave or stay but of course, do whatever it takes to make sure that your baby is safe. So sorry for what you are going through.