Aestrix snorts. "Yeah. The pile of wood is a bit of an eyesore, isn't it."
So she gets to building Kose's room. As promised, it's directly below her core room, with a set of stairs winding around the core itself and down to it. The room itself is rectangular, and Kose's bed is set into the stone directly below the core itself. The idea is to put Kose at ease about how totally vulnerable to killing she is (don't mind the foot thick slab of stainless steel she's putting in between the two, hidden in the stone) and to justify putting protections over the whole area later. See, she's protecting her dungeon fairy, that's all it is. Along with that, there's a wooden writing desk whose sides are made of interlocking arches that evoke tree branches, and a wooden shelf in the same theme. There's a door out to the main corridor of the dungeon, divided from the corridor itself by a curtain of (fake) vines, and a leaf-themed rug on the floor. It's a bit empty for Aestrix's taste, but this is what Kose asked for, and the walls are nicely decorated, with lots of (fake) flora nestled in the lovingly detailed designs.
Plus, there's a surprise. Across from the shelf is a planter, also set into the stone, and filled with some of that dirt that Aestrix keeps having too much of. She'd asked, and Kose had been cautiously desirous of real, actual plants, but resigned to their inevitable death in underground conditions. So, it's of Aestrix's opinion that clearly the only thing to do is to figure out how to make a magic sunlamp, and let her fairy/chaperone have literally any real part of the outside in here.
"So I don't have any seeds or any real idea how to make them," she informs Kose as she shows her the room, "but I bet I can rig up a magic light that'll act like a sun, so you can grow whatever you'd like. If you want to."