it’s funny to see him ignore that girl like she was a fly, I mean... you don’t want to get your hands dirty killing a fly so you just shoo her away or ignore her... 
so the ppl house become a dungeon like and the monsters can’t leave that place, see or atack ppl outside of there, if someone enter the dungeon area they instinctively recognize it as prey and kill, probally if noboby kills the monster they will continue to multiply and kind that start to “overflow” for another ppl house like a virus making this new house a new dungeon... interesting