Lost Tortoiseshell Cat on Hillcrest Rd

She is tortoiseshell in color with a light orange spot on the right side of her upper mouth. We are not sure how she got out, but we think she got out through a screen door. We have been looking nonstop and live in a very wooded and vegetative area. She has never been outside and is very skittish. She likes hard cat food and temptations treats, but if she is really spooked, she may not come.