How did John Muir's wife died?

John Muir's wife, Louisa "Lottie" Strentzel Muir, died in 1905 from what is believed to have been pneumonia. Her passing deeply affected Muir, who had already been dealing with the stresses of his conservation work. Her death marked a significant turning point in his life, leading him to focus even more on his advocacy for nature and the preservation of wilderness.