The person who told you to force her out shouldn't have any birds because birds (and most especially parrots which are so smart and have such long memories) should never be forced to do anything. Many years ago, we used to use these methods but they are no longer recommended (they are now called flooding techniques and are a no-no).
Are you handfeeding? Because, if you are not, you should be. It's a fabulous bonding technique and the bird needs the extra nutrition (breeders wean way before the babies are weaned in the wild -it's like feeding adult food to a puppy just because it's already eating on its own -not a good idea!). Sit as close to her cage as you can without her getting all tense or backing off and talk to her. Offer her a treat of something like a good quality whole grain bread and a syringe with a mixture of handfeeding formula and pureed baby food. Don't stick your hand in the cage, just open the door and wait for her to come out on her own. I am surprised that a baby GCC doesn't want to be on you because, going by the way they are (VERY needy), she should. Is the cage at your eye level? Because if you loom over her, you will scare her. Same thing if you stick your face close to the cage and stare at her (this is something only a predator would do). You need to put your face kind of sideways when you sit with her and look at her out of the corner of your eye while leaving the door to the cage open and speaking to her in a soft voice. It's just a matter of patience and time and not scaring her or forcing her to do anything she doesn't want to do.