You're doing right dh, just do your thing and live your life. If W really wants to talk to you she knows how to get in touch, i.e. cell or e-mail if the home line isn't doing it. As long as you're doing enough to allow her sufficient contact with S (Atlas's suggestion is good) that's all you gotta do. You've been clear about where you stand, if she wants something to change it's on her to take the initiative.
Me: 43 W: 41 Together 2009, Married 2011 Sons 10 and 6, Daughter 5 Bomb 2/21/21. W moved out 10/2021