Sounds like a great holiday Rd. Also sounds like you're making the best out of your sitch by focusing so much on the kids. That's all you can do and is the healthiest option all around, so well done.
Also sounds like XW knows she's missing out but has a disconnect as to why. She sounds sad from what you've written, I know the whole sitch is sad for all involved.
Keep putting your best foot forward and taking care of your kids. They know you're there for them despite the awfulness that's also happening.
Cheers, PP
M 39 W 36 T5 M3 BD - 1/15 Separated - Same Day Served 9/15 D finalized 6/17