My gut has told me she's done, but my gut keeps telling me I can save this.
Is your gut always so conflicted? If she is "done" what is there to "save"?
The fact she has filed should tell your brain SHE IS DONE!
A relationship requires the participation of two. You (one) cannot "save this" but you may try if you like. I did.
The towel has been thrown in.
Elvis has left the building.
Your W has filed for D.
Your M is over.
Sorry to say these things so bluntly but as one who has been there you need to hear them. Good you have a L. Tell them to look out for you because you probably won't be able to look out for yourself. Yes, improve yourself but not because you hope that will cause your W to change her mind.
Think of this as a gift. At one time you gave your life to your W. She has just given your life back to you.
What are you going to do with your gift?
"Fear is the mind-killer" Muad'Dib Me 53, XW 44, DD 14, DS 12 Bomb and OM 12/15/06 Separated 01/02/07 Divorced 05/13/08 X married OM(OMH) 08/2009 Married 06/09/13