I think my W is dragging her feet on filing because she'd really like me to file instead. That way she can place all the blame for the divorce as well as everything else squarely on me. She'd get to shed more crocodile tears and play up her "victim" status to her family and friends.
My X did the same. HE was the one who wante the divorce but in the end I filed for divorce because it was my only recourse. He filed for custody of the kids claiming I was mentally unstable. I had to fight back so I did. And in the end he can say that I filed for divorce. But I didn't pursue it and he filed the deposition to end the marriage. And 14 days later he married his "friend". Reaslistically, ther eis no DB'ing in the world that would have changed my sitch. He met the "friend" and decided he had to be married to her long before I realized what was going on, and nothing was going to change his mind. And he had the nerve to play victim as well. But in the end I know that although my marriage had problems I was always willing to put in the effort to make it work, he was not. I honored my wedding vows to the end and for that I am very proud. Be proud of yourself as well.
"You can't stop the waves, but you can learn to surf." Jon Kabat-Zinn