I agree something needs to be done and soon.
One caution: once you involve the government, you may never get your life back under your control.
It sounds like she is just extremely frustrated. This can be dealt with in many ways that other posters have mentioned, but I’m warning you, once the government is involved you lose all the control you might think you have.
We are all conditioned to run to government for “force” when needed, based on our fears. There is a very real chance that this situation is headed toward much worse than what you’ve described. There is also a chance that somebody else may report this abuse and then as another poster mentioned, it may be harder for you to isolate yourself from the situation and you could both lose the kids instead of just her. If she needs medical help and even needs “coercion” to take it (I shudder to think, having been a victim of unneeded “coercion” once that was not related to my kids) that is not as bad as getting legal authority. The best option is to get her to consent to such treatment because, again, the alternative of getting the courts or police involved is very messy.
This may sound very cold, but when I used to work for the Kansas Children’s Services League and met the social workers who handle child abuse cases, I was not sure based on the way they did things whether the good they did at saving some children actually offset the ways in which they took a bad situation and made it worse. When the children were in trouble, I would often ask, “have you contacted SRS (Social and Rehabilitative Services) about this?” More often than not, they had been involved and every single time – no exceptions with probably 50 applicable calls I received – things got worse after the government got involved.
That said, I do not diminish the urgency of the situation, as you are aware it is critical. Acting quickly is clearly required, but going to the law, as far as I’m concerned, is only as a last resort.
One thing you didn’t mention is what does your wife think of this? In calmer moments away from the children (if there are any) does she acknowledge her problems? Does she want to work on them? Let’s get straight to it: does she love the children and want to keep them? At some point there needs to be a place of agreement so you can base your growth from there.
Alan