RAPID CITY- Dawn VanHorne Duff, 41, Rapid City, died at her home on October 5, 2010. Survivors include: life partner, Allen Chase, Watertown, SD; mother, Betty Jean Bryan, Ormond Beach, FL; father, Harvey VanHorne, Colombus, OH; two sisters: Tawnya Whitney, Ormond Beach, FL; Donna Self, Columbus, OH; four brothers: Brian VanHorne and Daniel VanHorne, Dry Ridge KY; Kurt VanHorne, Columbus, OH; and Rick Wagner, Ft. Lauderdale, FL; six sons: Shane Danielson, Vermillion, OH; Blaine David, Monroeville, OH; Timothy Whitney, Mt. Dora, FL; Richard Whitney, Nathan Rieffenberger, and Brendan Broeker, all of San Tan Valley, AZ; four daughters, Shannon Broeker, San Tan Valley, AZ; Devin Card, South Daytona, FL; Amanda Schaff, Watertown, SD; and Lilly Ann Danielson, Vermillion, OH; and 5 grandchildren. Services will be held at a later date.