Hello there, My name is Shannon and I've seen this problem most commonly in dogs that have been switched from one family to another. She may be feeling uncomfortable emotionally right now. There is nothing you can do to make her feel at home because she isn't home in her mind yet. she'll learn over time that your home is her home now.
as far as the whining, I'm not blaming you at all but when a dog whines and people pay attention to the dog, regardless of whether or not it is negative attention (spraying water) or positive attention (comforting, petting, playing, feeding, AWARDING) you're giving her attention. she learns that to get attention, all she has to do is whine. so she learns to constantly do it. now you have to be patient with this. I know that it is going to be annoying. I think the worse case I saw was it lasted more than two weeks but to get her to stop, DO NOT PAY ANY ATTENTION TO HER WHATSOEVER. This almost always works. if she doesn't stop after a week.. you may have a problem. make sure you tell everyone that will be around her not to pay attention to her at all. dont isolate her. let her roam the house freely and whine whine whine. she needs to learn that that isn't the way to get attention. If she doesn't stop, she actually may be feeling physical pain, most likely internally (if you haven't seen her licking any external parts of her body or being protective over them) take her to a vet if this continues.
-Shannon O'Bryan
spobryan92@yahoo.com