Be a friend. Even if there is a divorce, the kids will still bring the two of you together from time to time for the REST OF YOUR LIVES. She will never, ever, be totally out of your life. If you can maintain the friendship, things will be a lot easier on you AND the kids.
So don't be afraid to help her out. Do what a friend would do.
Go back and read "While Your Spouse Decides" in the Articles section of this website. A see a lot of similarities with your sitch here.
Try to stop predicting the future and thinking about what might happen. Has she filed yet? Nope. Who cares what the lawyer's doing. And if she actually does file, so be it. I see too many people here who decide that once the divorce happens, it's over, that's the end. I'm not so sure, but then again, I'm an eternal optimist.
Buddy, sounds to me like you're doing everything write. You're a good man. She's lucky to have you in her life.
Bomb
Me: 51 W: 50 M 24 yrs EA: since Apr 06 S22, S26, S28 ILYBNILWY:Nov 07
"It's only after we've lost everything that we're free to do anything." Tyler Durden