I would respond to that. She has shown a desire to to communicate better. So come back with something like:
"I agree that we need to communicate better related to co-parenting. Here are my thoughts: I feel that we should make this as normal of a Christmas as possible for the kids considering all we are dealing with this year. For that reason I feel we should spend Christmas Eve and Christmas morning here, since is the home they are most familiar with."
Funny how WASs logic is so fuzzy. "Let's communicate better, but I am not going to answer your question." LOL So try to clarify your assumption.
Ok Steve, I went with your recommendation on this one. I added: