You haven't had her that long, have you? Give her time and don't press her too hard. My experience is that trying too hard scares off a skittish cat even more. You might want to try getting some treats that she likes and keeping them out and close to you. When she comes near, give her one. Cats vary a lot in how quickly they decide to like people. I've had two cats that started life as feral kittens. The first one had had some human contact by the time I got her, but she took a while to get confident around me. Once she got comfortable she was very loving. She never learned to accept anyone other than me and the person I got her from though. The second one was totally wild and it took him all of 15 hours to decide that I was the best thing that ever happened to him. He wants my attention 24 hours a day. He loves to climb all over me. After about a year, he still hides from other people though.