My parents had a cat many years ago that was feral. They were camping and found Ketsy deep in the woods. My dad managed to catch her, and they took her home.
It took many months of patience before she would allow anyone to touch her. The first few weeks were the worst, as she would become very angry whenever she saw my mother or father.My parents kept her in a spare room, and would try to spend as much time with her as she would allow.
Ketsy never was a really cuddly cat, and she hated to be picked up, but she was very affectionate in her own way, and was devoted to both of my parents. She died at age 15, which I would guess is probably twice what she would have lived to in the wild.