I wouldn't crate her at all. I think in the past she could have been left in a crate too long and so that makes her anxious when she is left alone even if you just go in another room. I would try leaving her loose in the house. If you are concerned about any accidents, you could try leaving her in one room or the garage or if you have a fenced in backyard.
Sting Chance von Gaard AKC GSD 2/8/2006