Outdoor to indoor cat

So, my family is moving in 12 days and we were going to give away our cat to my mom's friend on a farm, but decided she's too sensitive for it. It would not work out. So, we're keeping her inside in hopes of her liking it so we can move with her. How can I make her more comfortable? We have a cardboard box with a hole in it for her to hide in, my room has a lot of places to hide, we have two litter boxes on opposite sides in my room and her food and water bowl are in my closet (which is small and open, easily accessible). 
We would take her to the shelter, but it's a kill shelter and we do not want her put down. Does anyone have any tips? Thanks!
NOTE: she has to stay in my room because our dog will scare her off. She will mostly stay in my room during the move as well.