A barn cat that I recently adopted constantly comes to the door of the house and meows. She had kittens on Sunday. She had them in a box that happened to be at the back door. We left her there on the porch, but a Tom showed up in the middle of the night so we brought the box in the house. We took the box back to the barn the next day. She keeps bringing one of the kittens to the back door. How can I keep her in the barn rather than locking her up. It gets very hot in the only place that we can keep her that we are not in and out of.