That makes sense, as she's never had to be crated for any length of time before. It was a last resort sort of thing, but I will definitely not be using it again! We do have a few small rooms, but I don't want to risk more destruction.
As of her last vet visit in February, she's healthy, and has been at the cabin a lot, since she was a puppy, so I don't think it has anything to do with her being uncomfortable there. The strange thing is is that the other dog is completely fine being left alone.
Thank you for the advice! I'll definitely try leaving her alone for small increments of time (and listening closely for the sounds of things being destroyed :P)