Your cat will love you in time.. I think its lovely that your not giving up on her. My little monster (darling) was the same when we first got her, I couldn’t get my hand anywhere near her without being scratched to pieces unless she came up to me first. So I just left it up to her to come to me when she needed some company and eventually she came around. Took a long time though.
You’re definitely not doing anything wrong. We need more people like you in this world to take care of animals that have problems relating to people. There’s so many that are abused due to this problem. Actually, thats one thing I was wondering; whether or not she was abused (rather than being feral) before you rescued her?
Oh well, which ever way it goes I’m glad she’s found you. You’ll give her the life she needs and she’ll start to trust and love you in time for it.. :)