I can't remember but have you acted "as if" with this whole thing with her? Telling her you don't agree with D but you respect her decision to leave and will not stand in her way any longer.

Her and OW are being battle buds righr now and as long as you are the common enemy W won't be able to see OW'S faults.

It [censored] to basically act as I'd your moving on with your life with or without them and appear happy,but that's where I've been a while now and we no longer have negative interactions.

You have seen actions that suggest she cares for you still, basically it's time to step out if the way completely and let OW mess this up. Reacting to her will likely be the hardest thing to stop.

Accept what is, let go of what was, and have faith in what will be