That sounds like a great idea. At least that way you'll know she can get her beloved fresh air and not worry about her getting hurt or lost. (Again). Don't feel too badly about keeping her inside if it comes down to it. They do adjust. Sami was an indoor/outdoor cat for about 15 years (Plus she was feral for the first year of her life). When we moved into the apartment, that freedom was lost. She was upset for a week or two and tried to dig her way out of the windows but we showed her she can still have fun inside and soon she was fine. They do have a way of making us feel guilty though, eh?