My dog was stuck in a crate literally 24/7 for at least a year. When I got him, his ribs were flat on one side from lying in the crate so much.This is a great post. I would condition the dog to a crate. And work crate training as a safe place.
Your dog will absolutely love his crate if you have any more big parties and just wants to get away. And training will be so much easier to be honest. When the entire world spirals out of control into a crazy post-apocalyptic party for the dog. Well the dog needs a safe small enclosure where he feels safe and nobody will bother him. A crate is a great place for this.
He's never going to be okay with a crate. Just never. This dog might not be, either, and stressing her out on top of all the other stress isn't a great idea.
I'm not sure why the OP couldn't put the dog in her room and close the door, but that would be my advice in that situation.