[pavulon]

Maybe just do as well as you can by her, the child and your son. Doing well by them is not an admission of anything, costs very little now, seems to be the right thing no matter what and sets a good example for everyone. I'm not saying you haven't or won't but it's a tough situation so maybe make the best of it, try to not over-think it and see what happens.
Good luck to you.