Call of the Wild: What happened as the sled begin to move? What was Mercedes reaction?

After the sled began to move it tipped over, spilling half of its load. The men were forced to unload the bulk of what they carried, and Mercedes cried.

And so it went, the inexorable elimination of the superfluous. Mercedes cried when her clothes-bags were dumped on the ground and article after article was thrown out. She cried in general, and she cried in particular over each discarded thing. She clasped hands about knees, rocking back and forth broken-heartedly. She averred she would not go an inch, not for a dozen Charleses. She appealed to everybody and to everything, finally wiping her eyes and proceeding to cast out even articles of apparel that were imperative necessaries. And in her zeal, when she had finished with her own, she attacked the belongings of her men and went through them like a tornado.