A pioneer in women’s rodeo competition, Bertha was the first woman to ride broncs at Cheyenne, marking the start of female participation in rodeos. Making a name for herself as a bronc rider, she joined several Wild West shows, including the 101 Ranch Show, where she married Del Blancett. Bertha moved to California where, with her husband, she worked in films under contract to Bison Pictures. Between movies, she competed at rodeo venues.