Very impressive. And different in fundamental ways from a winter highway bicycle ride.

The article says she said she thought she was doomed when she found both her butane lighters wouldn't work. This seemed odd.

Is this from the altitude or the cold? Wouldn't they work if she kept them warmer in some inner clothing? She said it was from the altitude. Wouldn't the lower air pressure at 10,000' encourage the gas to escape the lighter rather than the opposite?

I hope people like this are doing something to balance the huge carbon footprint of such expeditions. Otherwise they're ruining the very places that host their adventures. (Had to make a wet blanket comment.)