I am right now separating from my husband and divorcing. We can commiserate. My husband has been abusive, and I am leaving him now for the second time.
I have followed your story all this time - it's news that she drinks so much alcohol all day every day. That explains a LOT.
I agree with divine here. Take care of the kids and yourself. Your wife is no longer your concern. Your greatest concern is your children's well being - she has caused damage to them, and if there's no intervention, it could be very damaging to them for years to come. Do what you need to do, but remove yourself and distance yourself from your soon to be ex wife.