Sorry, I should have qualified that to mean training available to the general (non VAS or Ambo) public.

The patient may well get cold in (quite a few) minutes but won't get dangerously hypothermic for quite a long time.
Many variables of course. Wind chill unlikely to be a factor indoors. Not talking about immersion.
Depends on what she was wearing, most people going ice skating don't do it in swimming costumes.
Also depends on her personal insulation, was she a big girl or was she skinny.
How did you decide that she would be hypothermic in minutes without any of this information?
Then of course we have the laws of physics governing heat exchange. It just doesn't happen that fast.

Oh well, what about the pressure sores. Am I really causing pressure sores by prolonging the time on a hard surface?
Don't spinal boards have a hard surface? Can't put her on one of those then.

Back to reality. I had a very similar accident in february last year and would like to share my experience with you.
I slipped on ice and suffered a fall onto my back causing a hyperextension injury to C6. I had pain / tingling in arms and legs and my hands didn't work.
This was in a remote area in the Highlands of Scotland. It was about 15 minutes before I could move my arms enough to reach my phone and call for help. Another 40 mins before the paramedic arrived in a rapid response vehicle. He could do nothing on his own so backup was called. This arrived 35 minutes later. It then took the three of them another 15 mins to move me onto a spinal board.
At this point I had been laying on sheet ice with my head in a snow drift for an hour and a half.
Once in the ambulance it took another 2 hours to drive the 60 miles to the nearest A&E unit in Aberdeen.
Once in A&E I remained on the spinal board whilst X ray and CT scans were performed which confirmed the diagnosis of Fracture to C6
I was finall moved off the board an hour and a half after arrival.Ever spent three and a half hours on a backboard in collar and headblocks?
So after 11/2 hours laying on ice, outside in sub zero temps I was not even close to hypothermia
After 5 hours laying still on assorted hard surfaces (ice and backboard) I didn't have a sign of a pressure sore.
Now I am a fairly feeble old man in his 60s so how could this happen?

No, I just imagined all of it.No photos.

For many years I trained the rescue services in the North Sea. Hypothermia was a very important feature of the training.
Almost every one I trained had been told at some stage that if you fell in the North Sea you would be dead in a matter of minutes from hypothermia. Total nonsense, just as the idea of someone becoming hypothermic in a matter of minutes from laying on ice is total nonsense.
We will have to disagree but if you ever come across me in similar circumstances and want to load me onto a stretcher, please just walk away

I think most people would lead a longer and happier life if they told registered nurses to go away, and I say that as a registered nurse of over 40 years experience.
Most of that experience was as an occupational health nurse / offshore rig medic in the North Sea/Africa/Sahara desert/Middle East almost always single handed looking after up to 300 workers in some of the most inhospitable and dangerous environments in the world, and doing some of the most dangerous jobs in the world. This was followed by 15 years training seafarers and standby ships crews to rescue people from the water and treat their hypothermia as well as training mountain rescue teams in casualty recovery and rescue in the Scottish highlands where hypothermia is also a distinct possibility, so-if you want to get into a pi**ing contest I reckon I could get further up the wall than you.
You make bald unsupported statements like "she would be hypothermic in minutes" and then when I disagree you expect me to show photographic evidence that I didn't have a pressure sore.
I'm not actuall sure that you know what acute hypothermia is and would be interested to know how many times you have seen or treated it.

I was sticking up for you, but now you've fessed up, you're on your own

I wouldn't normally have told anyone, but he started it and I just sort of got carried away

Watch it, those handbags can hurt

The question was how many times have you seen and treated acute hypothermia.
Acute hypothermia, by definition, has a rapid onset, but not as rapid as you are suggesting in the circumstances under discussion.
The risk of allowing a team of first aiders to use equipment that they may well never have used in real life before on a potentially spinal injured casualty vastly outweighs any potential risk of hypothermia or pressure sores.
IMO when first aiders are faced with a potential spinal injury the rule is "do not move unless it is to save their life"
This girls life was not in danger, at least not until someone decides to move her.