They took her out and just froze her head. Apparenly her skin had been badly damaged. The patients were converted to neuros for reasons of cost and the bodies were autopsied. This is, at least in part, responsible to the whole debate over fracturing, and whether it would be practical to store at slightly higher temperatures. Several dogs have been recovered form near zero centigrade - but they were never below the ice point.
Many animals survive winter in or around the tundra by partially freezing.
Whilst function was rather impaired, integrated brainwaves were found. This was done in the sixties and I'm sorry to say that the line of research has been very poorly followed up since. Freezing protocols and cryoprotectants are so much better understood these days that doing the same but updated experiment mihgt well give quite noteworthy results. Sadly the Society for Cryobiology bans any cryonics related work, and cryonics organisations are running on rather tight budgets at the moment. I hope the situation changes in the near future.