After complete silence for what was long enough for her to forget that I'd even asked a question about next week, I reminded my wife that I had just asked her about going out on Thursday night. More silence followed, then my wife finally, hesitantly said, "Ok. I guess."
I then mentioned the potential event for January, but that was followed by more silence. Then she said, "Why do you guys have to plan stuff so far ahead?" I told her that people like to make plans, and some people even need to make plans. Despite the explanation, I only got more silence and then she changed the subject. I haven't gotten any answer about January yet. My best guess is that January 10th will be the best day to attempt something.