Coco blocks would never stick to any of the prey. I feed frozen thawed and always dry them so that nothing would get stuck to them. With this particular girl shes a bit shy never strikes at her food and always in her hide so i have to place it by her hide for her to get it on her own. Ive watched my other pythons eat off the substrate and always see the little blocks fall when they start eating so doesnt make sense that she would take some in along with her but thats the only explanation that makes sense that i can think of. I gently touched the area and its definitely hard with a bulge on the belly side.