Like I mentioned before, I agree with River. I don't know if it is headed towards D or not. And your C can't read her mind either. So I wouldn't worry about that right now. She can file but then always stop it. She just sounds very confused to me right now. Give it time. And like a lot of people said on this board D is only a piece of paper and you can still reconcile.
I said the same thing to my H. It's only a piece of paper and doesn't change the feelings we have for each other and he went completely silent. Don't give up now.