I think if she gives you one or two gifts somewhere in the season, you should graciously accept them. If she is giving you a heartfelt gift every day for each of the 12 days, that is a bit imposing on her part. In fact it is an attempt to control I would say. That goes way beyond what most people do in terms of gift giving unless she is from a culture that routinely does that. You can respect each other's policies while maintaining your own, unless it gets extreme on either side. mg