Treaties in 1858 and 1865 greatly reduced the size of the original Ponca Reservation, yet the tribe remained peaceful. An 1868 error in the Treaty of Fort Laramie ceded Ponca lands to their enemy the Dakota Sioux, resulting in eight years of repeated raids against the Ponca and ending with the forced removal of the tribe to the new reservation.

The journey to Indian Territory was plagued by muddy roads and floods caused by heavy spring rains. Most of the tribe suffered from disease and hardship. Several children like White Buffalo Girl perished and were buried along this route that became known as the Ponca “Trail of Tears.” The people of Neligh provided a Christian funeral for the child and an oak cross was erected at the gravesite. Black Elk’s last request was that the grave of his daughter would be honored and cared for by the people of the town. In 1913 a marble monument was erected and the grave has been maintained and decorated in memory of White Buffalo Girl and the Ponca.