I think the trick for you, NY, is to go into this with absolutely ZERO expectations.
W might just need a quick hit of NY, so she can resume things with OM.
If you can pull off appearing detached and like you are moving on, that will be your best bet IMO.
Be light and breezy and have a twinkle in your eye like something really cool is happening in your life that you are excited about.
Oh... and read Sandi's 37 rules about 50x before meeting W.
If things start to get a little dicey, be the first one to end the meeting. In fact, be the first one to end the meeting no matter what. Remember, you're busy and have so much going on that you can't stay for too long.
I would definitely not recommend talking for hours, W will go back down the bunny hole, I can almost guarantee it. Leave on a high note when the convo is going well, that will leave her wanting more.