Ah, I see. I am curious, then, as to how the diguise is affected when it, for example, squeezes itself through a small crack. And if it's constantly generating it, could it change its disguise? If so, can it change into anyone, only people it has previously eaten, or can they only steal the form of someone they're currently eating?
I am also curious as to how an anomaly like this was even able to insert itself into an amish community. The Amish tend to have very tightly knit communities, so a "grandmother" who isn't related to anyone would immediately stand out.