First of all, the kind of stagnation that brought the D about, is not the same as now. My understanding is that things did not change before and now they are changing slowly. If that is true, then you are on a good course. What to do? Stay the course. Enjoy things being ok. It's an important time to show her that things will continue to improve.
I wasn't going to tell this, but I think it may help you. In my first M, we were separated living together for a few years so that I could complete my master's degree and be able to provide a solid financial home for me and the kids. During that time, I had given up trying to change things and so did he. We stopped arguing, we got along and did things as a family with the kids for their sake and the rest of my family - my mother was dying during this time and he offered to help take care of her along with everyone else. By the time we filed for D, everyone was shocked because we had been getting along so well. Soooo, that made us rethink the D. He kept asking"what are we doing?" and I kept saying "we will talk when we get home". Only he never did talk to me once we were home and I just didn't question him. After the D, I wondered if I should have pushed a talk. By the way, I was the one asking for the D originally. He was the one who pushed it through in the end. We were able to stay friends, not just because of the kids, but because that is the kind of people we are. It seemed to me then that we may been able to salvage our M but didn't talk. Moral... getting along is a good thing, change is a good thing, making change the new norm is good, next step is doing something together as a family. When family events came up I told my exh, you are going as long as we are M, when we are D you can stop going. When you feel it is the right time to ask her if she still feels the same - you will know it. I encourage you to talk with her when you are ready. She offered to talk when the papers came. If you can live in the same house, be friendly daily, know what is coming, and still want to work on it, then please talk about it at some point.
So far, you have been a good judge of things and timing. I trust you to know when to initiate a talk.
If I can help any further just ask - you know I will be here.
