In 1975, Walker was hired by the Tecumseh Confederacy
Manpower Program in
Xenia, Ohio to assist Native Americans living in the
Columbus, Ohio metropolitan area with job placements and other needs.| She often worked out of her car or from home to assist her clients. She helped them with obtaining identification cards,
high school equivalency certificates and began a clothing drive to provide them with basic necessities. Eager to establish a focal point for the urban Indigenous population, in 1977, she and others, sold
fishing bait to stores to raise enough money to pay rent on a building on South High Street. The duplex they were able to rent, became the home of the Native American Center of Columbus. The center provided food, clothing, and household items to members of the Native American community, as well as emergency, counseling and employment referral services across metro Columbus and it sponsored cultural events. The center also coordinated services for the Ross County Community Action Community. Keeping the center open was difficult, as funding was obtained only through initiatives Walker created. In 1983, the Native American Center of Akron paid the operational expenses and salaries for Walker and her staff. Beginning in 1984, she organized fund-raising drives each May and September, through cultural events like
pow wows to cover the operational costs. She also gave lectures to churches and other local groups to raise awareness of Native cultures and arranged for
Asa Primeaux, Sam Necklace's grandson, to serve as the spiritual advisor of the center. For a decade, he traveled between the Yankton Reservation and Ohio to mentor the urban Indigenous community. Her work was recognized by numerous local honors, such as the Community Service Award of the
Columbus Dispatch, the Clifford Tyree Award of the City of Columbus Department of Human Services, and induction into the
Ohio Women's Hall of Fame in 1986. In 1990, Walker led protest marches to the
Ohio Statehouse hoping to thwart a bill proposed by
State Senator Roy Ray, which would extended the authority of the
Ohio State Archaeological and Historical Society over preservation of all historic artifacts on all public property in the state. The protest called for Native American artifacts, and particularly Indigenous remains, to be returned to the tribes. Ray agreed to alter the text of the bill to make it clear that it did "not apply to Indian burial remains". In the 1990s, Walker's daughter Carol began working at the Native American Center as an assistant director to her mother. The facility was lost to a fire in 1992 and a fundraising drive began. The drive was successful and the Native American Center reopened on April 1, 1993, at 756 Parsons Avenue in Columbus. Walker continued as director of the facility until 1996, when her daughter Carol became its executive director. ==Death and legacy==