That probably has a whole lot to do with it. This isn't forced nor does it have any ulterior motive. She also thinks that at least half of it is just Stiles himself. She didn't realize how she took him for granted when he was here, or how much she missed him until he was back.

"Nesting on the couch it is." He's got a point and that's clearly what sways her. Unless they want to drag a mattress down here (and why would they) it's going to be uncomfortable, while the couch is terribly comfortable. It just needs some pillows and blankets to really seal the deal. She's pretty psyched about it as well because it's revisiting a childhood that she was abruptly shoved out of. She'll help him hang out in adolescence a little longer.

"Yes, please," she chirps and starts tossing pillows toward the end of the couch that he's not sitting on. Pillow fights in their underwear is an event best scheduled for later (or you know, not at all). She'll grab a blanket and make her way to the couch. There's really not much arranging of the blankets. It's mostly just sort of piling it onto the couch and burrowing into it. Pillows can be arranged once Stiles has joined her.