She took a “survival class”. Maybe she wanted to show-off her “skills”. IMO she has a screw loose.
I hope to never end up in such a situation.
But if I was thinking immediately about survival, I’d probably start by getting a bit of gas from the car, and using it with the car battery to start a fire. Because once you have a good roaring fire, you can melt snow, which means you have water, and you can make smoke, which will signal your location, and the car is a good shelter, and you should easily be able to survive 4-5 days even if you have no idea how to collect any food.
Then you do expeditions out a couple of miles each way trying to find signal for your phones.
Of course, I’m still wondering if they could have gotten the car out of the mud if they just spent a few hours piling up branches and stuff . Which would be another task after I had the heat thing taken care of.