When a divorce is finally filed, its almost a relief to the WAS, they all of a sudden come to terms its over, so I don't have to keep up my charade. They settle down, feel the situation in now amicable and can jump right back into co-parenting without the extra burden of trying to make the marriage work anymore.
I don't know how to proceed. Maybe a vet can chime in, personally I wouldn't say anything, I would withdraw the papers and say nothing. If she comes to you later and asks why she hasn't gotten her papers yet, well then, you know she's been waiting to get it over with. That still doesn't mean you cant salvage your marriage, you just made it a lot harder I guess.
I'd wait to see some of the reply's you get, DONT act on my advice. You've still got some time.