Their parents , brother , and two older sisters had been killed and scalped .
The sisters were part of a family that had been attacked outside of Ellis , Kansas , on September 11 , 1874 , while migrating to Colorado Territory .
sisters ' parents , brother , and two older sisters had been killed and scalped .
The sisters were part of a family that had been attacked outside of Ellis , Kansas , on September 11 , 1874 , while migrating to Colorado Territory .