You’re right about the Kansas militia. That being said, the casualties were much higher - 11 warchiefs were killed and more than 100 warriors. See http://www.custerwest.org
A white captive named Clara Blinn, who had sent a letter to the US army 20 days before, was executed by the Cheyennes with her two-year old child.
I’m aware of the higher estimates but I just don’t believe them. One branch of my family was in Republic County, Kansas for the bloodbath there.
It is a real shame Custer was killed, a lot more savages needed to be killed for their heinous deeds.