When I was reading Rocket Llama's account, the one thing I noticed is that other than stamping out help in the snow in a field, she did very little to try and make herself more visible. She could have taken forest duff, branches, etc. to fill in the "Help" in the snow to make it more visible. She could have lit a big, smoky fire. Yes, they are illegal in the park. However, in a life threatening situation that would be forgiven, and even if not it's better to be judged by 12 than carried by 6. Any light source at night would help, if searchers are looking. A mirror, CD, even the face of her phone could be used to flash the sun (assuming it ever poked through). Hunkering down under a tree was probably prudent, considering conditions, but any opportunity to make yourself more visible to rescuers should be taken. I assume part of the reason these things didn't happen is that as a UL hiker she may have lacked the very gear that might have helped - a decent knife, firestarter, mirror - I often see that type of gear scoffed at here.
That said, I thought her thinking on self-rescue was terrific and her resilience in the face of what was probably a very psychologically difficult situation was excellent. The end result was she did really rescue herself- I have no doubt that if that motorcycle hadn't run across her she would have walked out on her own.