C.B.
Yes, have your own Christmas with your daughter in her own home for once. Then you can go Christmas eve or the next day for just an hour or two to visit MIL and exchange presents. I also do not see why you have to "Ignore your own small family", MIL is not holding you down not to go see them is she?
Thank her for all the years she supported you living at their house, thank her for all the Christmas dinners, but I would say this year we are having it at our house on Christmas day since that is my birthday wish, and you can come or we will see you the day before or after. Just put your foot down. If hubbie goes to mom's house then just have it with your family. Stick to your guns but be nice about it.