Ever drive the “Going To The Sun” road in Glacier National Park? I drove it with my wife as passenger. As I was driving I couldn’t take my eyes off the road to look at the scenery, so one time I asked my wife what the view looked like. She couldn’t tell me, she was too scared to take her eyes off the road.
Never made it up there—furthest we’ve been into MT is Little Big Horn. I’m sure it’s beautiful, but I would probably be doing the same as your wife.