Hi glam- Once again you know I can relate to your sitch. My H has chosen to go out of town on Christmas. I am not happy about it but it is what is.
Here is my thought...since your H is avoiding spending Christmas day with the family for whatever "excuse de jour" maybe you could try to have a little family Christmas celebration tomorrow before your sister arrives or even after she leaves. I know it isn't quite the same but it might help you alieviate some of your disappointment and it might even possibly help your H work through some of his issues or at least keep him from feeling some additional guilt.
