Yes, you should wait at least a week before handling her. It would be even wiser to wait until she ate a couple of times. I'm not sure what you mean by not allowing you to get her. She might hiss or get into a strike position, but just gently reach in and grab her from behind. I'm sure she'll calm down as soon as you have her in your hands. Right now she thinks you're coming to eat her, so give her time to get used to her new environment and realize that you're not trying to eat her, and she'll calm down.