It sounds like it took your wife two years to reach the same point my now ex-wife reached in three months. Part of the problem I think is that our walk aways are waiting for some sort of sign or too miraculously fall in love again. Some are more patient than others in waiting for that. And some of our spouses actually don't want to keep us waiting. It is pressure on them that we are waiting in the wings for them to come back. They think divorce will make us wake up and smell the coffee. Of course stubborn guys like us won't even quit when divorced.
I'm sure that it's crystal clear to your wife that you want her back. Or is it? Validate that you are aware that she wants/needs this divorce, but that you don't. Dragging your feet after that will only be more pressure. You can't control how she thinks or acts. She either will file for divorce or she won't. You can only DB to the best of your ability and hope she chooses not to divorce. I like your attitude though. The divorce is really not much different than separation.
And I agree with you. This window is too small.
In the end, it's not the years in your life that count. It's the life in your years. Abraham Lincoln
It is hard to fail, but it is worse never to have tried to succeed. Theodore Roosevelt
