Did anyone else force her to go into the crate without you knowing it? Are your other dogs not crated? Maybe to her if the other dogs are not crated she feels that she shouldn't be as well?
If she is not destructive, then I would test her for short periods of time and see if she can handle not being crated. Leave the crate out and put some yummy treats in there and maybe in a few days she will go in on her own. I think some dogs are just more sensitive to change and need time.
I stopped crating my dog when he was 6 months old. First it was un crating at night and then short periods when we left the house. He proved to be reliable and has been crate free since.
Bear GSD 10/16/11
Elsa GSD 12/23/03 - 11/10/11