Make no mistake about it, your old M is dead. Would you really want that back anyway?
Your W is not the same person you M. After all is said and done you will not be the same either. Any R you have whether it's with your W or someone else will be new and have to be built from the ground up.
Don't second guess yourself. You did what you had to do to have any chance at all.
Keep working on you and recognizing and owning your part in getting to where you are. This will get easier and you will be OK.
Detach with love and let your W deal and figure out her own issues. She's running at this time because she doesn't want to face herself. She thinks an OM will fix her and it won't work.