When I got Angel from a breeder all she did was hide. So it's not just your cat. Cats get scared when they move from one place to another. It may take awhile for your kitty to become comfortable.
Maybe you should leave your cat alone for awhile so she would get use to her surrondings. But try to stay around her. Try to give her treats and try to play with her. Soon, your new kitty will learn that your nice and she shouldn't be afriad.

Good Luck!!