I don't really get her pose. She looks like she is standing, leaning forward a bit as if she was supporting herself with both hands on a sideboard/kitchen countertop.
However, that grey rectangle is clearly the lowered part of the entrance (genkan).
Maybe it's supposed to be a "I was walking to the door when suddenly my jeans melted and I was turning around like ara ara" pose, but still a bit odd. Just my autism.