zuma, 3 months is not a long time at all, compared to most people here. I do understand that it feels like eternity because I expected my own S to be over in 1 month.
It sounds, to me, that your W realizes how important you are to your kids, and really want you involved in their lives, if even for their sake.
It's hard to say whether she's stalling for time or not. I tend to agree that if she doesn't care about the M, she probably wouldn't want you around in May for the baseball game.
If I were you, I would not initiate R talk with her. It might set you back more. It would be pursuing and pushing her... If she hints about R talk, then that's a different story. -PH