My thoughts are she has the info, give her some time.
If someone asked me - even someone with whom I'd repeatedly expressed an interest in seeing - for when I was free in January, I'd need some time to think about it, to check my calendar, to check the work calendar, to check my DH's calendar, etc. Its 2+ months away and right after the most hectic social time of the year, I think she was wise to be light about it for now.
You aren't blown off at this point, you are simply deferred. Now if she ignores you until February and then tries to pick things back up, then you've been blown off.