It's the secrets... isn't it, NYC... The LBS always wonders, although we are working for the M and anything our spouse does to move away from the M will feel bad... why keep secrets... the lies add to the pain of the abandonment...
I'd suspect your guess is right and she filed, but then again...
At least you have reason to believe that some time in the future you may receive papers... at least you can prepare yourself to some degree...