While I do not claim to be an expert or formally trained in handling animals, I have had some success in working with Siberian Huskies which have needed help overcoming the fear of people. I really believe that the dog does most of the work, as each one has wanted to be part of my family, and each one worked hard to over come their fear of people. I do various things, most with good reason, to help my timid fosters come out of their shells. Every dog is different, and remember that you are working on the dog's time-table.
Some dogs are able to adjust quicker, while some are slow to come around.
Don't give up, especially if the dog is flirting with you. You'll know the dog that needs more time when you see her. She'll cry out when you pet other dogs. She'll wag her tail and cry out with joy when you come home from work. She'll try to play with you from 8 feet back, and she'll throw a fit at the back door when the other dogs are inside with you.