Mochi ("Buffalo Calf"; c. 1841 – 1881) was a Southern Cheyenne woman of the Tse Tse Stus band and the wife of Chief Medicine Water. Mochi, then a 24-year-old, was a member of Black Kettle's camp and was present on the morning of November 27, 1864, when John Chivington and over 650 troops of the First Colorado Cavalry, Third Colorado Cavalry and a company of the 1st Regiment New Mexico Volunteer Cavalry attacked Black Kettle's winter camp at Sand Creek on the plains of eastern Colorado Territory (referred to as the Sand Creek Massacre).
During the unprovoked attack, Mochi witnessed her mother being shot in the forehead and killed by an American soldier who had entered their tipi. According to her account, he then attempted to rape her, prompting her to shoot and kill him with her grandfather's rifle. She then fled the camp with the other survivors trying to evade Chivington's men. After the massacre, she became a warrior and engaged in raiding and warfare for the next 11 years.
Lone Tree massacre 
On August 24, 1874, in present day Meade County, Kansas, Mochi, Medicine Water and the other members of their band were involved in the massacre of a surveying party led by Capt. Oliver Francis Short, who had fought in the Union Army during the American Civil War. Short, his 14-year-old son Truman, and four other members of the party were killed, with three of them being scalped.
German family massacre 
On the morning of September 10, 1874, in Kansas, Chief Medicine Water and his band, including Mochi, attacked John German and his family as they were breaking camp. The family had camped along the stagecoach route which followed the Smoky Hill River while en route to Fort Wallace.
German, his wife Lydia, son Stephen, and daughters Rebecca, Jane, and Joanna were killed and scalped, with Mochi killing Lydia with a tomahawk blow to the skull. After plundering the camp and setting fire to the wagon, the band took German's four youngest daughters captive. They were Catherine, age seventeen; Sophia, twelve; Julia, seven; and Addie, five.
Julia and Addie were traded to Grey Beard's band and were liberated after an attack on his camp on November 8, 1874, by a column led by Lt. Frank D. Baldwin. Catherine and Sophia were released in March when Chief Stone Calf and most of the Southern Cheyenne surrendered at Fort Leavenworth, in Kansas.
Fort Marion 
Mochi and her husband Medicine Water were among 35 Cheyenne singled out for incarceration in the east. They were among a larger contingent of Plains tribe members to be sent east; in addition to the Cheyenne there were 27 Kiowa, 11 Comanche, and 1 Caddo. Two of the Cheyenne died en route, including Grey Beard, who was thwarted in a suicide attempt only to be shot and killed trying to escape.
After being incarcerated at Fort Sill in Indian Territory, they were taken in eight prison wagons to Fort Leavenworth and then loaded in a special train for the journey to St. Augustine, Florida. In St. Augustine, Mochi and the others were incarcerated in an old coquina stone fort built by the Spanish in the 17th century. The fort, originally named the Castillo de San Marcos, was renamed Fort Marion by the Americans.
Mochi and the others would remain in captivity at the fort under the supervision of Captain Richard Pratt until 1878. Upon her release she returned to Oklahoma and died in 1881, in what is present day Clinton, Oklahoma.
- Mendoza, Patrick M.; Strange Owl-Raben, Ann & Strange Owl, Nico (1998), Four Great Rivers to Cross: Cheyenne History, Culture, and Traditions, Libraries Unlimited, p. 70, ISBN 978-1-56308-471-3
- Montgomery, F.C. (May 1932), "United States Surveyors Massacred by Indians", Kansas Historical Quarterly (Kansas Historical Society) 1 (3): 266–272, retrieved April 21, 2011
- Lee, Wayne C. (1997), Deadly Days in Kansas, Caldwell, ID: Caxton, pp. 59–63, ISBN 978-0-87004-379-6, retrieved April 21, 2011
- "Surrender of an Indian Tribe", The New York Times, February 27, 1875, retrieved April 21, 2011
- Lookingbill, Brad D. (2006), War Dance at Fort Marion: Plains Indian War Prisoners, University of Oklahoma Press, p. 85, ISBN 978-0-8061-3739-1