 After which, she worked with architect Philip Hurbert Frohman (1887-1972) at the firm Frohman, Robb, & Little in the District of Columbia.There, given her expertise on Gothic architecture, she became the chef restoration architect for the Cathedral of St. Peter and Paul (originally designed by Bodley & Vaughn), later known as the Washington National Cathedral.She was also one of the only women architects on the team responsible for the completion of the project.