It is natural for her to be frightened of you, and it is important for her to have a place to feel secure and away from danger in. Sit patiently with your hands in the cage, let her sniff them if she wants to. Do this every day for a few days, then once she is used to that, put a tasty treat in the palm of your hand and let her take it, if she wants to. Do this every day for a week. Then when she is comfortable with taking the food from your hand, start to stroke her fur. Again, do this for a week or so. She will begin to associate you, your hand and you stroking her with nice treats. Let her climb on your hand if she wants to. If you are patient enough, she will become tamer and will not object if you pick her up. But don't flap around her, just pick her up gently and firmly. You may find she will happily climb onto your hand anyway and you can take her out of the cage. You may need to increase the time scale for each stage, or you may find that she becomes tame quicker than expected. Let her do it at her own pace and you will in time have a fantastic, affectionate and amusing pet.