Hi Maresche,
Set up a room in the new house just for your nervous feline. Put a litter box in it, and put some used litter in the box that has her scent. Put a bed in the room, doesn't have to be a human bed, just some comfy spot with her favorite cushions, throws, etc., just make sure they have her scent on them. You might also want to put something on the bed or in the room that has your scent on it as well. Put a cat carrier or crate in there as well (the bed might go in here) so she can go into a "safe" place. Don't forget her food and water, make sure you use the food she's accustomed to eating.
When the room is set up, put Kitty in there and leave her be. Don't try to "force" her to come out, just let her be and wait it out.
If she gets really spacey, you might consult your vet and see if he can provide a "kitty tranquilizer" to ease the transition.
Best wishes to you and Misao.