Gracey, I have 3 siblings. One is Alabama, one in Georgia and one in N. Carolina. I and my parents are/were in the midwest. Five years ago, they ALL came here for Christmas. It was the first time we had all been together is ten years! IT WAS AWESOME! and, it happened to be the last time we were all together before my mom passed away. WE HAD A BLAST. DO IT! DO IT! DO IT! And, I agree with the above, invite MIL over Christmas morning to watch kids open presents or Christmas Eve, and if she chooses not to, let her and your H do whatever the heck they want. Doesn't your H understand that you want your siblings to see their niece? Obviously not. Have a great Christmas!