Well in my opinion you're doing everything right. Some cats just take a lot longer to adjust than others. I remember you also saying that she lived with the woman ever since she was a kitten so this may also be a huge factor of why she's so shy around other people. The woman probably didn't have many visitors and even though she was a show cat and around people at shows, she was in a cage most of the time. Remember my Ziggy. Well even though I adopted her as a kitten, she wasn't a very loving and friendly kitten. She was a loner most of the time. It took her several years before she even wanted to come to me for pets and scritches. Now she can't get enough of me. She would also freak out if people came over and would run and hide. If I did bring her out to people, she would be so nervous she would growl and hiss like she was a feral cat. She was exposed to 2 roommates which she was fine with but they could never touch her. She will now let my live-in boyfriend pet her when he's in bed and she jumps in between us. This was a major break through for her. I would say give her at least another month with allowing her to roam throughout your home. At least she's getting along well with Phinehas. Good luck.