I was thinking the same as R2C. What signs has your W shown you that might encourage this new approach? You might want to start by ramping up the friendly banter and seeing how it goes. If it goes well, try suggesting a family outing. If that goes well, then maybe, maybe a neutral outing for the two of you. But you want to keep expectations low and the pressure off. Don't forget your DB rules. Keep it light and simple.
Dan,
fwiw, I agree with this. ^ It's going to take some TIME, tho. In fact, I'd give it like 6-8 weeks, and then reevaluate.