Katie Marie Costa-Rivera, 54, passed away Thursday, July 2, 2020 at Eagle Cliff Manor in Billings, Montana. She was born June 27, 1966 in Billings. Her parents were Katherine E. Roundface and Oliver Costa. She was raised by Manual Barbosa. Katie attended school at St. Charles and Plenty Coups High School in Pryor, Montana, graduating in 1984. Katie enjoyed Harley Davidson motorcycles and had a passion for gardening and crocheting. Katie traveled all over the United States with her life long love, Steven Caveny. Las Vegas was their “home away from home”. In what spare time Katie did have was spent with grandkids, whom she loved dearly. Survivors include her children: Bridgett, Micki, Matilda, Kalem Costa, and Danielle Rosas (Rivera). Grandchildren: Katlyn, Kacey, Kailani Old Crow, Madison and Jeremy Lathers, Tara and Marcus Stands Over Bull, Leo Alvin Pinnick, and Ziah and Zola Rosas. Brothers: Thomas, Ronald and Milton Roundface, Mike Stewart Sr., Dewayne and Dominic Costa, Craig Doney and Thomas Broken Rope. Sisters: Alma, Donya, Christy and Ollie Costa, Lorna Doney and Hannah Small. Due to the large size of our family we are unable to list everybody; we apologize if we did not list your name. She LOVED everyone dearly!!