Aunt Sisters?

My granddaughter had been interested in Native Americans for awhile. Every Sunday on the way to church we would have a BIG discussion of our ancestors, some of which were Native Americans. I had explained to her how our ancestors help make us who we are now. Our heritage is important and we should honor family. She asked me several questions one morning and I had grown weary of answering them so my mind had went into autopilot with my comments back to her. My brain jerked back to our conversation when she asked the question! "Mamaw, how are they our Aunt Sisters?"