Right. I have been on both sides of this. My exH was an alcoholic and I (eventually) got myself and DS the hell out of there because there was a complete lack of acceptance on his part/attempt to do anything. I was teetotal for years in reaction to it.
Fast forward 15 years, and I ended up exactly the same. Insanity. I actually in a sober moment drew up a contract for my DP saying if I were ever drunk he was to eject me from the house, involving the police if necessary, because it wasn't safe for the DCs.
I am now in recovery and there is, for today, a happy ending. Please don't lose hope. Your DW will be feeling (even if she doesn't show it) completely doomed. I got to the point where (this is an awful thing to write) I had kind of accepted I was going to die, and all that was up for debate was whether I could hold on long enough for the younger DCs to remember me.
The only thing that can snap her out of this is a) acceptance that she is powerless over drink. Not just that she can't drink, but that she can't NOT drink. In alcoholism one drink sets up a physiological craving for another. That craving (it's the mesolimbic dopaminergic circuit, which is stronger in the brain than the survival impulse - for you or your children) cannot be ignored. It's not about a lack of will, or morals, or even love. Unless b) she sees that somewhere there IS a solution to the hell she's trapped in. For me, that's been AA. Sitting in rooms and listening to people and thinking ''bloody hell, that's exactly what it's like, if they can do it, so can I." Hope.
The issue us, you cannot do this for her. In fact, any attempts to control or cooerce will have quite the opposite effect. Your perceived stroppiness will be an excellent excuse to drink (poor me) and it stops her taking responsibility and hitting rock bottom. I really believe that someone needs to hit rock bottom in order to be able to bounce back.
Therefore, there is really only one thing you can do, which is what Al Anon preach - compassionate detachment. You need to, with love, let her hit rock bottom (which may be her moving out/ending up in hospital/SS mandating only supervised contact with the kids) IN A WAY IN WHICH THE DCS ARE NEVER IN DANGER, EMOTIONALLY OR PHYSICALLY. This isn't about not loving her, if you still do. And in fact making sure that she knows she still is loved, but the illness is hated, will help.
It will be very hard, but is, I think, the only way you and your DCs stand any chance of having her in your lives for years to come.
How do you think you might do that?
By the way, I wouldn't talk to her about AA explicitly, otherwise it'll get tangled up in her head with your efforts to control her and her drinking...but you could get a copy of The Big Book and leave it lying around - she may pick it up, and the first chapters on what alcoholism is, and the personal stories at the back, will resonate.
I wish you all the strength and courage in the world. I know I put my own DP through hell and I will NEVER be able to repay the kindness and love he showed me. If she CAN get herself better, things will change and become just so wonderful so quickly. I genuinely am back to my old self; in fact I'm better than my old self, because I am so grateful, and it's given me real clarity on what matters most. It's just sad that I had to put everyone through it in order to become a nicer person.
Please PM me if you want to chat more.