Native American wedding vase, Sioux or Lakota, signed

This beautiful native American wedding vase is soft mauve with black and white with a matte pottery finish. A piece pipe and feather's, decorations. White feather has a relief to the paint. Measures over 7" tall and is very heavy. Hand written signature on the bottom reads Little Violet 36. I'm not an authority but think this may be Sioux or Lakota. Please inform me if I am wrong. Information on it will be appreciated. Th feather designs are around the entire vase. Email me if you need more pictures. This lovely piece of pottery is in perfect condition.