Personally I think you need to give her time. Just imagine how you would feel if you were thrust into a new environment with people who had already built up a solid relationship. Your best bet would be to take all the dogs into a new environment to allow them to adjust then that evens out the score a bit. Take them walking somewhere new to them all for instance. If you give up on her now she is just going to become institutionalised as we humans know it and she will withdraw even more. PLEASE GIVE HER TIME. I have seen this type of problem before but give the pack time to adjust.
