A little girl stabbing innocent stuffed animals to death... that game's unexpectedly dark, huh? Also, what's that snowman thing that Hazuki was talking to? I guess this chapter showed Aoba's dark side with her gleefully scaring the shit out of stuffed animals while wearing the corpse of one of their brethren, but I don't recall Aoba ever playing around with that snowman thing.
During the company trip, when Aoba was bathing along with Hifumin, she made a snowman and used it like a doll to play a "torture" scene, melting it in the water while "interoggating" it. Hazuki was nearby at the time, bathing by herself, so she might have witnessed it then. Later, still on the trip, when Aoba was in the sauna with Hifumin, she brought another snowman there and got disappointed that it didn't melt as fast as in the bath, before leaving it there, startling the next person to get in. That extra bit in ch. 38 certainly takes place right after that.
Also "don't flick me anymore !", so easily misunderstood. XD