She's just a really scared little chicken. Give her some time. Remember animals have a timeframe called NATURE that sometimes takes longer than our timeframe called NURTURE. We think by such and such time she should be a certain way. Well, explain that to her! You can't, of course. So just hang in there. She may come around before you expect it, anyway.
BTW, if you can't handle owning her, try to find someone who does chicken rescue, perhaps?
BTW, if you can't handle owning her, try to find someone who does chicken rescue, perhaps?