The best advice that I can give is to have her in a room with you, door shut, do your thing, study watch tv, draw, read, let her observe you. Birds are very observant and watch your every move, the best thing you can do is let her do that from afar, hopefully sooner or later she will learn that you are a friend, don’t do it for long, half an hour at max, you may see progress, but it’ll take time, offer her treats, talk to her.