Some animals never get used to a cage. Personally, I would not look forward to being restricted to my house regardless of the comforts involved. Your cat was attuned to those good old days when she functioned as she was designed, but my bet is that if she can arrange it, she’ll show up. Maybe you can train her to be an indoor/outdoor kitty like our former champion, another feral convert who turned out to be the best damned cat I’ve yet to come across.