To little Too late

[2little2late]

So here I am a few months into my separation, but not really a move out separation. We are separated because I have a taken a job out of town not because of an actual move out.
Anyway, ever since my wife explicitly said to me that she is through with our marriage and has to move on to live her life I have also started to do the same. I am more dim than dark because of our daughter.
So my wife has had a strange turn and I don't know what to make of it. She has progressively been more concerned about me and our future. She calls and talks about day to day life kind of like we are a happily married couple. All of our conversations are about "we" and "us" and the future is always us. I swear that it is strange. There is no physical contact. No talk about us. No intimacy of any kind. I have conditioned my self to not be concerned about us but just for our daughter.
So what should I do? Nothing? I am concerned that in time my feelings towards her will fade. She seems to be moving towards me while I keep moving emotionally away. I really don't know how to handle this situation and I am concerned.