We did the same after a big move interstate. Our outdoor cat became an indoor cat. And she's very happy. We always played with her so she gets plenty of exercise. And now she's getting older she does exactly what she'd do outside. Lie around. cats can be happy inside. If you can afford a cat enclosure great. But they can be happy without them.
A friend has a cat enclosure that attaches directly onto the house so her puddy can come and go as she pleases through a cat door, but is always contained and safe. The enclosure has logs, grass and plants in there and its big enough to stretch her legs a bit so its not just a little cage ITMS. It also gives the cat an opportunity to lie out in the sunshine on grass if she wants too, which is kind of nice.
I think though that some cats are happier outside than others (mine would never leave the house, specifically the bed) given a choice!), but they can adapt and its a whole lot better than the alternatives. I hope she settles into her new home soon.
I had an outdoor cat and when I had to move into an upstairs granny flat he became an indoor cat. He's fine, still very happy. We have moved now and I let him in the backyard but he doesn't roam far.
Do you have a backyard. Maybe you could just take her out occasionally when you are out there? If she's in new surroundings she might stay close rather than bolt??
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