She then returns to the corner and slowly opens the door. It’s darkness beyond there, so she holds out the pitchfork with the locket wrapped around it. It’s a small room, so it lights up just enough for her to see what was perhaps once a pony.
It seems almost melded into some sort of fleshy shell that has a bunch of holes all over it. Then she spots some flailing insect like legs, and she realizes she has seen this before.