Roberta Anne (Chaboya) Cahill, 82, of Pierre, passed away Friday, May 29, 2026 at Avantara in Pierre. A celebration of life will be held at Isburg Funeral Chapel on Sunday, June 7, 2026 at 4:00pm with the family greeting visitors one hour prior to the service. A graveside service will follow Monday, June 8, 2026 at Greenwood Presbyterian Cemetery in Greenwood, SD at 11:00 AM followed by a small luncheon.

Roberta was born April 1, 1944 in Wagner, SD, the daughter of Sarah St. Pierre and George Chaboya. Family and close friends lovingly called her Berdie or Bea. She grew up in Pierre where she attended McKinley Elementary and Pierre Jr High School and graduated from the Flandreau Indian Vocational High School in 1962 where she was a cheerleader, salutatorian, senior class president and editor-in-chief of the yearbook. She received her Bachelors of Science degree from Northern State College in 1966 and her Masters of Art from the University of South Dakota in 1971. She was an enrolled member of the Yankton Sioux Tribe.

Roberta married David Cahill on June 9, 1967 in Deadwood, SD. Together they raised Daniel, born in 1981, and instilled the values and ethics they had inherited from their parents. She was a tremendous wife and mother allowing her family to thrive. They made many trips together as a family, travelling to the Black Hills often and going on multiple road trips built around the family love of baseball. She attended all of her family’s events she could, even keeping score at Dan’s baseball games and filming games and concerts. She was also the primary photographer for family events making sure important moments like holidays, birthdays and trips were documented. Roberta was known among her family as a supporter and protector of all. She looked after everyone, never refusing to help when asked and offering a helping hand when necessary. No one went without if she could help it. She was a great listener and advisor leading to her being the go-to person for her family.

Roberta’s work career can be encapsulated in one word: service. Much like her husband David, each position she took was in service to others. She began her career working for the State of South Dakota as a social worker. She then moved to the federal government in 1968. During this time she worked at the Pierre Indian School as a counselor and dorm parent where David was a social worker. She and David then moved to Sitka, AK where she was the girl’s freshmen and sophomore councilor for two years at Mt. Edgecumbe High School, a boarding school for the Indigenous students from all over Alaska. At both schools, Roberta was a fierce advocate for her students, always fighting for their best interests. They then moved back to South Dakota in 1978 where Roberta worked for the Bureau of Indian Affairs in Aberdeen until moving back to Pierre in 1980 to raise her new family nearer to her family and home. She continued her work with the BIA in Ft. Thompson until 1990 when she transferred to the Indian Health Service as a Community Health Educator, ending her government career in January 2003. Roberta retired for good after a decade working for American Cancer Society in Pierre where she was the Director of SD Community Partnerships, concentrating on outreach and education, while also helping organize events such as the Relay for Life.

Roberta and David loved travelling and meeting new people. They took many trips across the country, mostly by car or van. They travelled across the Central, Southern, and Western United States. They were especially fond of Western Canada and Alaska making multiple road trips beginning in 1976 through 2016. Both were extremely fond of nature and animals. Roberta was a prolific photographer taking hundreds of pictures of nature and animals on these trips. They had two dogs, Sport and Snoopy they loved dearly and spoiled. Later they spent untold hours feeding birds, squirrels and rabbits in their backyard. She was particularly fascinated with eagles and spent hours of time just sitting along the causeway or Capital Lake watching the ducks and geese or driving along the Oahe Dam or the local islands to observe nature. She and David referred to this as their therapy. Roberta was also a philanthropist, donating to many charities including those doing medical research, supporting veterans, and especially supported wildlife and natural resource protection and food insecurity charities.

Remaining to cherish Roberta’s memories and carry on her legacy are son Daniel (Tucson, AZ), her three brothers, Larry Haukaas (Debby) of Pierre and children Paul, Larry and Jennifer, Thurlow Haukaas (Estelle) of Pierre and nine children, Harley Haukaas (Laurie) of Yankton, SD and children Carly, Samantha and Haley, and sister Ellen Bad Moccasin (Paul) of Pierre and children Robert, Derek and Marcus and numerous cousins.

Preceding Roberta in death is her husband David, mother Sarah, brother Greg, sisters Eileen Jo Haukaas and Julie Kay Haukaas and many uncles and aunts.

In lieu of flowers, the family asks you to donate to PAWS or PARS both in the Pierre area.