My first rescue, Annie B, was so completely freaked out over all the sight and smell stimulation. Even being on the grass made her a wreck. I quickly learned her triggers and found that simply being up off the floor helped her. So I made her a safe place on the couch with some blankets that came up high all around so that she could burrow down into them. It took her nearly a year & a half to get comfortable with her new life. She blossomed into such a social butterfly once she gained trust in me to keep her safe.
My last rescue, Bonnie, would get over stimulated with all the activity in the house. She loved small little cubby's that she could run to when she felt threatened. I made sure there were places all over the house set up for her to use whenever she wanted. Eventually, something as simple as the corner in the kitchen became a safe place to nap.
Look for the triggers, try to remove them if possible and try to find what helps her feel safe. Remember, everything is so new and so big and so over the top to her right now. Give her time, you and Mrs. Beasley will get her to understand what a wonderful new life she has.