In late 2014, Steele made her Broadway debut in The Country House by Donald Margulies, playing the granddaughter, Susie, opposite Blythe Danner. In 2015, she appeared in the play The Humans, first Off-Broadway and then on Broadway.
Steele's entry into the world of theater took place with a performance in The Country House by Donald Margulies in late 2014, playing Susie, the child of Blythe Danner. She followed this with an appearance in The Humans, initially at an Off-Broadway venue and later on Broadway.