15 minutes... even with an EMT onboard... I hope I don't know as much medicine as I think I do
I've seen much worse, so I'm confident.
A few years ago we were acting a modern play as amateurs on a parking roof. That was a very very hot summer evening. A few minutes into the play, one of my friends, who was 40-years-old and was apparently in full health, stumbled, walked a few steps like a zombie, then collapsed on the ground, apparently unable to coordinate his movements.
We were shocked and wondered if it was something he was doing in the context of the play, but it was a bit too weird. After a long minute, our director said "ok stop !!" and from there we called the emergencies.
They first didn't believed the person who called them (it was a Saturday evening). After an agonizing 45 minutes, the ambulance was in sight.
The guy had a brutal heart attack. He was saved because there were 1 nurse amongst us and 2 paramedics amongst the spectactors. But they had absolutely no drugs or hardware. They kept him alive with their hands and pure know-how.
Later we learned the guy's heart stopped beating and was restarted 12 times. Today he is ok, though his brain suffered from O2 deprival. Doctors said that some parts of his brain were dead. His memory was almost entirely gone and he even forgot how to walk. But even if he was slow at first, he was able to think, communicate (and learn again). So after 6 months of intensive re-education, he was on foot again and had recovered a good deal of his memory. Clearly a bit slower than before, but it still was him. There is still no real explanation of why it happened, again he was healthy, rather young, athletic and practiced sport.
So 15 minutes with a trained crew and some emergency hardware/drugs doesn't seems so bad. But I'd say she'll have to retire in a quiet place after that. They are probably going to have to find a clone for the next Star Wars, even if Carrie recovers well.