Difficult as the journey had to have been for her, she wasn´t known to complain of its hardships. She had an even disposition and kept her head in times of trouble. Five weeks out from Fort Mandan, in a squall, Charbonneau almost sank the pirogue carrying the expedition´s documents and scientific records. The wind and churning waves terrified him. While he begged God for mercy, his wife calmly retrieved the irreplaceable items that were washed overboard.
"A white man wouldn't have told her about taking sulphur water when she was sick. Indians would have taught her that. She probably saw the water and told the white man to get it for her. She'd have learned that from her people." Lois NavoA few weeks later, near the Great Falls of the Missouri, Sacajawea became seriously ill. She was so sick that some of the men were afraid she would die. Lewis tried several remedies with varying degrees of success. The one that appeared to make the difference was sulphur water from a nearby spring. She eagerly drank it and soon recovered. Generations of Lemhi Shoshonis have valued sulphur water for its healing properties.
In the summer of 1805, the expedition reached the place where the Hidatsas had captured Sacajawea almost exactly five years earlier. Lewis recorded that she showed no emotion, but he may have interpreted depth of feeling for absence of feeling. This was the place where her mother and other important people in her early life were killed, the place where the innocence of youth abruptly ended. Seeing it again, she wouldn´t necessarily have been demonstrative. If she remained quiet and somber, who could have blamed her?