Wow, what a gripping story! The atmosphere you created is so eerie and compelling, and I love how the attic, a seemingly mundane place, becomes the catalyst for uncovering such a deep and unsettling family secret. The twist about the grandfather and the disembodied beings was completely unexpected and added an incredible layer to the narrative.

The way you portrayed the grandmother as both pragmatic and deeply affected by what happened really adds emotional depth. It's amazing how she lived with that secret for so long. The story kept me hooked from beginning to end, and I'm left wanting to know even more about those disembodied beings and their intentions.

Your writing style brings out the suspense perfectly, and the ending leaves readers with so many questions in the best way. I’d love to see more of this eerie world you've hinted at—maybe even more about how the grandmother dealt with the aftermath or about the origins of these beings. Great work!