Sometimes, that "dropping the rope" attitude is exactly what is needed.

If you have done most everything else, this is a perfectly good goal--to drop the rope and move on. You may find her attitude shifting.

If you have dillegently made changes, been better, improved yourself, improved your Rs in other areas, and she STILL isn't interested, then...

Some people hang on for a lot longer. I don't think that is good for them. Makes them bitter and angry.

What would make you less bitter and angry? It's for you.