As a Citizen of the Cherokee Nation of Oklahoma and a descendant of the Blackfeet Nation of Montana, Mariah reconciled her cross-tribal identity by learning, embracing, and sharing American Indian Sign Language. This ancient transcultural language was significantly eroded by boarding school prohibitions but has recently experienced a revival within Native America. Taught by her Cherokee mother at an early age, Mariah began showcasing sign talk beside her dad, NAMMY award winner Jack Gladstone, at the age of two. Since then, Mariah has signed at numerous venues across the country including Glacier National Park, the Lewis and Clark Bicentennial, and the 2008 US Capitol Christmas Tree lighting ceremony. She has shared the stage with music legends Rita Coolidge, Michael Martin Murphey, and R. Carlos Nakai. Mariah has instructed students of all ages in workshop presentations. The craft of beadworking has been passed to Mariah by indigenous artists and has been refined by her to reflect an intertribal tradition. Mariah’s jewelry is displayed and sold on the Blackfeet Reservation and throughout Glacier National Park.