In 1890, Biggart was in charge of the department of elocution at the Chautauqua assembly of Glen Park, Colorado, and that she was giving exercises illustrating the Delsarte System.

[1] Around the same time, she had been instrumental in starting the Polytechnic Institute and Woman's Athletic Club of Denver, intended to aid women to gain health, strength, and beauty.

She held several important positions in colleges and seminaries, and for five years, she had charge of rhetoric and elocution in the West High School, Cleveland, Ohio.

She gave part of each week to that work, and the remainder was employed in the State College in Fort Collins, Colorado, 72 miles (116 km) from Denver.

For about two years, the Colorado climate proved beneficial to her, but eventually, the high altitude caused extreme nervous troubles and necessitated another change.

[3] In 1905, while resting in Atlantic City, New Jersey, she gave addresses in the Presbyterian and Methodist churches in order to arouse interest in the Hopis and Navajos.

[5] Furthering the "aggressive evangelism" work of R. W. MacCullough, she became the assistant pastor at the Union Baptist Church, of Noble Street, Greenpoint, Brooklyn.