The barn is on the other side of the wall to the left. She somehow found a tiny opening into the ceiling 8 feet up in the attached barn. She did this to get safe haven away from the feral father Sam, who probably would've killed all the kittens. She left like clockwork every night at 10 PM to go hunting.
The very first time I saw my cats. Daisy -- a stray in this picture -- had her kittens in the ceiling over my bathroom in my apartment -- a converted farmhouse with attached barn, in Manchester, NH, in 2000. I was hearing meows in the ceiling for days until I finally pulled the light fixture out.