The Tundra Path
As everyone else had gotten some rest to at least a small degree, Clark was the only one that constantly was up and pacing while also keeping watch. He had to make sure that he decided on the very best method so that Grace would solve the problem that had been created in a moment of both panic and need.
She had been the very reason that they had all escaped uninjured. It was already a miracle that none of their group had drowned when they fell in the water. If Brad had been any weaker he would have sunk down in the turbulent water due to his partner's weight.
But Isa had made ice enough for Brad to hold on to then Grace had created a literal ice bridge that lasted long enough to run across. Both were events that added much more risk to the situation while also saving them. It was hard to accept all of this, but it was also just a fact of where they were.