I believe Jeanette is evil, though maybe she’s more like one of those medically intuitive dogs they’re developing or exploiting. The dogs don’t suffer from their knowledge. That is, empathy is beside the point here; they can just detect that illness is present in a body before, sometimes long before, more standardized inquiry and tests confirm it. In Jeanette’s case, though some groundwork is undoubtedly required, she’s honing her instinct of arrival, appearing just before another is about to enter the incomprehensible refuge. She’ll be writing a book about her experiences next.

