It is junk science, some creatures can indeed be frozen and revived because of unique properties of their physiology. Humans cannot.
So far it has been proven that organs can be cryopreserved and restored to full function. A rabbit kidney was extracted, cryopreserved to liquid N2 temps, re-warmed, and implanted into a living rabbit. It survived solely on that kidney for 48 days until it was euthanized to study the kidney. Physical and biological aspects of renal vitrification
In fact, by decapitating this girl and digging her brain out of her skull, they've guaranteed she is forever dead.
Here's a concept that you may not have heard of before: Information-theoretic death.
"If anything can go wrong, it will." -- Edsel Murphy