Hi
First of all, though I do not reside in the States, I would nevertheless like to firstly thank you for your services and hard work in the police forces. I greatly admire anyone who puts his life on the line to help people!
Having said that, I'm terribly sorry for what you've gone through. I'm also in awe of how great you've handled everything and what great character you've shown in these times.
As for the current development, allow me to be a blunt:
I am happy for you and the kids.
If this is the end any R attempts on your side, then you will from now on be on a road to personal healing, where you will be able to invest all your energy and time (unless for the job) on your kids and yourself.
You will continue to be an amazing father to your kids, and you will be able to focus solely on them. You will not have to look over your shoulder constantly, you won't be ridden with concern what she's doing, how the R is progressing etc. You will, especially after the first shock will pass, be able to devote most of your time and energy to your kids&yourself, instead of her. As this forum teaches, R is a gruelling process, and as I try to look at this situation from the glass full perspective, I'm glad that you found out the truth about her now, and that you can make a quite clean break from her now, instead of potential R with her dragging on for a long time.
Your kids won't be put in a confusing position, they will only go through this one transition. They will not grow up in an atmosphere of a two-parent household filled with heavy matters of reconciliaton, ..., only to perhaps later on be forced to go through another change if the R wouldn't suceed. You will be able to be the best dad, the best moral example, the best...., you can be without her interference. Whatever you may think, her issues (above all her selfishness, her putting her wants ahead of not only you, but her kids, when it came to OM) will have surely been reflected in how she'd raise the kids. Now, you will get to raise them properly. And with time, they will unfortunately learn that actions have consequences, and perhaps that will help them greatly in their lives.
This is a long and rambling post. But I think there are a lot of positives to this. Do I prefer she were truly remorseful from the beginning? Yes, of course. But do I see many positive things from the recent developement, along with the many negative things? Yes, I do. And I hope you will in time be able to focus on the positive things.
The next chapter of your and your kids' lives is beginning. It may start on a dark note, but it shall get better and better, and there will be lots of happiness for you and the kids in the future!
I wish you and the kids all the best, and that someday your STBXW will get the professional psychological help she clearly needs to become a good mother/co-parent.
Best wishes!