I really feel for you and your situation. Until your W gives up the OM and her "single" lifestyle it can't work. Too bad she just won't "give in" to the marriage and focus on it. I certainly understand why you are tired. You stand on your head while juggling and she still just does what she wants and calls it her contribution to the M. I would just love to reach out and shake her for you. My SIL did this same thing and tried to rationalize her behavior to herself and everyone around her. Your patience is amazing and has kept you in the game but it may take a different tactic to help you win the game. I am not going to make any recommendations but it sure seems to ba a stalemate right now.
I hope you have a great vacation and maybe the time away from the OM will open her eyes somewhat. My prayers are with you.