She was also a leading practitioner in the treatment of tuberculosis and an advocate for addressing opium addiction in China.

[5][6] In Belgium she served in a French field hospital, keeping a bitter diary detailing the horrors that she witnessed daily.

[8][9] Researchers have speculated that Ernest Hemingway's influential unadorned style may have been influenced by La Motte's own writing, through Stein's mentoring.

[9] After the war, La Motte, accompanied by Chadbourne, travelled to Asia, where she witnessed the horrors of opium addiction.

[10] La Motte took over Chadbourne's financial affairs in 1937 and earned over 1 million dollars on the stock market during the 1940s and '50s.

[5] In 1959, she played a significant role in the revitalization of Crane Co., the company founded by Chadbourne's father.