Welcome to the club no one wants to ever join. You are in good company.
First off, this is very early in your situation and you are going to feel FEAR like never before. Your world will feel like its crumbling around you.
It's critical that you stay calm. Whenever you start to panic, come vent here and we will talk you off the ledge.
Slow down and focus on taking it one day at a time. Read up on other people's situations and see what you can learn from them.
Consider your W as having been abducted by an alien because her behavior will be like nothing you've seen before. She is addicted at the moment and under the influence of OM. The chemicals in her brain are mimicing the effects of drugs (Im not kidding).
You will need to have LOTS of patience so prepare yourself. Lots of couples have come back from this even when it seemed impossible.