You did very well in that conversation with her. I wouldn't have too many more of those too soon though. Try to have some faith - if in nothing but that you're going to be keeping an ear out for Him. That is all you need to do. And for the love of all things Holy don't set a time-table. Don't put God (or yourself or your wife) into that box.
Just FYI: It might be real hard for her to hear you apologize for anything right now. Even if you owe it to her, it might still be hard for a while. She's still realizing a lot of things and my bet is she feels a huge amount of guilt for (among other things) not having the knowledge before that there was a way to fight for the marriage. But she didn't know. There was a lot I'm sure neither of you knew. But you're learning now. And no matter what happens, that's a good thing.