The screaming and even biting is not all that uncommon, but it IS very stressful to the gecko. I would slow down with the taming attempts. Instead of every time you are feeding, maybe every other. You could start things slowly by laying your hand flat in the tank away from where she is. As long as you stay still she might come investigate. Just gotta keep still no matter what. Like [MENTION=54498]Keeboard[/MENTION] said, if she does bite, let it happen and do not under any circumstances pull your hand away quickly. This could injure her. Eventually with patience on your part, and a lot of effort, she will come around and get used to you.
Something that helped me with my male was that anytime I was in the same room as him I would speak to him, even if I wasn't near his cage. A soft, even tone seems to help them the most. I got so used to doing this that even when I am upset about something, when I walk in the room, I instantly change my tone of voice and talk to him, my female Leo, and my snake.
I hope your baby does get used to you, these really are awesome little animals and once they accept us, they can be so much fun to watch and spend time with.