@5pForAPlasticBag
OP,
I would be so wary of anyone who purports to care about you and would have you leave your home on Christmas night to sleep in your car.
Disgraceful behaviour.
Beyond selfish and IMO abusive.
I think you are being played.
I tjink you need to pack your bags promptly and return home.
Tell her if she needs space, she needsto find it in the house or move out herself.
Prepare yourself that the relationship is over and tell her that you will not be treated like garbage that can be shuffled out the door.
She may no longer want to be with you, or have met someone else.
Whatever.
You need to not accept her bullshit and her giving you the run a round.
I think the new job may indeed have given her sight of different options.
As the marriage is so short, selling up and dividing asssets should be straightforward enough.
Personally I would never trust a person who would force you to sleep in your car.
I wouldn't let a dog sleep outside at the moment.
I think you need to find your anger and self respect.
Wishing you the best.