This framework explains why her case was survivable in principle.

What it does not fully explain is the specific combination of peripheral tissue damage — extensive enough to prevent needle penetration and produce the “frozen solid” appearance — with the apparent preservation of core organ function sufficient for recovery without major damage.

The distinction between surface freezing and core freezing is well-established in hypothermia medicine.

Patients can have severely frostbitten extremities while their core organs are protected.

But the degree of peripheral involvement in Jean Hilliard’s case, combined with the extreme ambient temperature and the six-hour exposure duration, makes her case unusual even within the category of severe hypothermia with peripheral freezing.