When we first got Sarama, I put her in her crate in my home office for the night . . . and she cried, and cried and cried. I got up and dragged the crate into the bedroom, and she settled down and went right to sleep.
Mike said "I thought you were supposed to let them cry?" And I said "She's wasn't crying because she was in a crate. She was crying because someone she loved once took her to a strange place and left her there and never came back. She's afraid that her new people are doing the same thing."
She's never cried in her crate since . . . well, except for the time we forgot her dinner, but that was just a little whimper.
(yes, we fed her then)
I can't prove that was the problem, but I think it was . . . she was afraid we were abandoning her.