My little half sister was my usual playmate. She was two years younger than I, and I loved her dearly. She had a pretty name, Cold Medicine. On our prairies grows a flower with long, yellow root. In old times, if a warrior was running from enemies and became wearied he chewed a bit of the root and rubbed it on his eyelids. It made his eyes and tongue feel cold and kept him awake. The flower for this reason was called cold medicine. When my father spoke my sister’s name, it made him think of this flower and of the many times he had bravely gone out with war parties.