So lets get this right... a young teenager flies off on her first solo, decides to fly up into the high mountains in a low performance Cessna, presses on into the mountains until the valley she is climbing into is too narrow to turn round and the ground is too high to get over. Then the inevitable happens!
So who supervised her route? Or did she get hopelessly lost and fly in a totally different direction to that briefed. If so, surely she might have noticed the mountains coming up?
Perhaps supervision & training might be investigated.
Either way, a lucky young lady to walk away from the crash.