Mary's Response to Powder

I like the tension Tobias Wolff sustained throughout this story involving a journey which was hazardous and potentially disastrous at any given second,as father the father drove his son through a snowstorm. Father and son plummeted forward through the unknown corridor of the mountain, now knowing what lie ahead. The desperation of there being no alternative to "the switchbacks and hairpins..." suggest duality of the father's sense of risk overpowering the consequences of his wife's anticipated "...hissing..." as anger/unforgiving disappointment.