I would take her hissing and growling as her saying "I'm terrified!!! Help!" If my cat did that after a move I would sit down and talk to them. I would tell them I know the place smells weird and scary but to hang in there it will feel like home soon. Then I would puuuuuuurrrrrrrr , do the slow blink and stay there until my cat was less afraid. I would also try new toys to see if you can get her interested. I have found leather cord braided into 3-4 feet chunks works great (the kind you use to make jewelry.) Or even a yard of unbranded cord, just be sure to put away after play and be careful to not accidentally whip your cat with it (I did with 3 strings of leather tied together so I braided it.) (Yes my cat forgave me.) Also newspaper fans or crumpled bars seem irresistible to cats.