I'm so sorry to hear about your evening. It is a progressive disease left untreated.......
The decision to file or not is yours entirely, but I ask one question that perhaps should be mulled over:
What if there had been a fire in your home with your just barely 2 year old son and your wife passed out on the couch?
For me, that would be argument enough to at least live with the child apart from her.
Hugs and prayers for you, your precious son, and your wife. HG